diff --git a/betty/assets/betty.pot b/betty/assets/betty.pot
index 00fc86b95..9390a9d31 100644
--- a/betty/assets/betty.pot
+++ b/betty/assets/betty.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Betty VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2024-07-11 21:30+0100\n"
+"POT-Creation-Date: 2024-07-12 00:13+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -208,6 +208,9 @@ msgstr ""
 msgid "Could not extract {file_path} as a tar (*.tar) file after extracting the outer gzip (*.gz) file."
 msgstr ""
 
+msgid "Could not find a plugin \"{plugin_id}\"."
+msgstr ""
+
 msgid "Could not find any of the following configuration files in {project_directory_path}: {configuration_file_names}."
 msgstr ""
 
diff --git a/betty/assets/locale/de-DE/betty.po b/betty/assets/locale/de-DE/betty.po
index bff593802..9719279ff 100644
--- a/betty/assets/locale/de-DE/betty.po
+++ b/betty/assets/locale/de-DE/betty.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Betty VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2024-07-11 21:30+0100\n"
+"POT-Creation-Date: 2024-07-12 00:13+0100\n"
 "PO-Revision-Date: 2024-02-08 13:24+0000\n"
 "Last-Translator: Bart Feenstra <bart@bartfeenstra.com>\n"
 "Language: de\n"
@@ -290,6 +290,9 @@ msgstr ""
 "Konnte {file_path} nicht als tar-Datei (*.tar) extrahieren, nachdem die "
 "äußere gzip-Datei (*.gz) extrahiert wurde."
 
+msgid "Could not find a plugin \"{plugin_id}\"."
+msgstr ""
+
 msgid ""
 "Could not find any of the following configuration files in "
 "{project_directory_path}: {configuration_file_names}."
@@ -713,8 +716,8 @@ msgid ""
 " at all."
 msgstr ""
 "Die Entitätsreferenz muss für eine Entität des Typs "
-"{expected_entity_type_label} sein, gibt "
-"aber stattdessen überhaupt keinen Entitätstyp an."
+"{expected_entity_type_label} sein, gibt aber stattdessen überhaupt keinen"
+" Entitätstyp an."
 
 msgid ""
 "The entity reference must be for an entity of type "
@@ -722,8 +725,8 @@ msgid ""
 "{actual_entity_type_label}."
 msgstr ""
 "Die Entitätsreferenz muss für eine Entität vom Typ "
-"{expected_entity_type_label} sein, ist aber"
-" stattdessen für eine Entität vom Typ {actual_entity_type_label}"
+"{expected_entity_type_label} sein, ist aber stattdessen für eine Entität "
+"vom Typ {actual_entity_type_label}"
 
 msgid "The following errors occurred"
 msgstr "Die folgenden Fehler sind aufgetreten"
diff --git a/betty/assets/locale/fr-FR/betty.po b/betty/assets/locale/fr-FR/betty.po
index 5ab51b72f..45ab1bf67 100644
--- a/betty/assets/locale/fr-FR/betty.po
+++ b/betty/assets/locale/fr-FR/betty.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2024-07-11 21:30+0100\n"
+"POT-Creation-Date: 2024-07-12 00:13+0100\n"
 "PO-Revision-Date: 2024-02-08 13:24+0000\n"
 "Last-Translator: Bart Feenstra <bart@bartfeenstra.com>\n"
 "Language: fr\n"
@@ -249,6 +249,9 @@ msgid ""
 "outer gzip (*.gz) file."
 msgstr ""
 
+msgid "Could not find a plugin \"{plugin_id}\"."
+msgstr ""
+
 msgid ""
 "Could not find any of the following configuration files in "
 "{project_directory_path}: {configuration_file_names}."
diff --git a/betty/assets/locale/nl-NL/betty.po b/betty/assets/locale/nl-NL/betty.po
index 29e529c93..c0ceba9e7 100644
--- a/betty/assets/locale/nl-NL/betty.po
+++ b/betty/assets/locale/nl-NL/betty.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2024-07-11 21:30+0100\n"
+"POT-Creation-Date: 2024-07-12 00:13+0100\n"
 "PO-Revision-Date: 2024-02-11 15:31+0000\n"
 "Last-Translator: Bart Feenstra <bart@bartfeenstra.com>\n"
 "Language: nl\n"
@@ -289,6 +289,9 @@ msgstr ""
 "Kan het bestand {file_path} niet als een tar-bestand (*.tar) uitpakken, "
 "na het uitpakken van het buitenste gzip-bestand (*.gz)."
 
+msgid "Could not find a plugin \"{plugin_id}\"."
+msgstr "Kan de plugin \"{plugin_id}\" niet vinden."
+
 msgid ""
 "Could not find any of the following configuration files in "
 "{project_directory_path}: {configuration_file_names}."
@@ -720,8 +723,7 @@ msgid ""
 " at all."
 msgstr ""
 "De entiteitsverwijzing moet verwijzen naar een entiteit van het type "
-"{expected_entity_type_label}, maar geen "
-"entiteitstype is ingesteld."
+"{expected_entity_type_label}, maar geen entiteitstype is ingesteld."
 
 msgid ""
 "The entity reference must be for an entity of type "
@@ -729,8 +731,8 @@ msgid ""
 "{actual_entity_type_label}."
 msgstr ""
 "De entiteitsverwijzing moet verwijzen naar een entiteit van het type "
-"{expected_entity_type_label}, maar verwijst"
-" echter naar een entiteit van het type {actual_entity_type_label}"
+"{expected_entity_type_label}, maar verwijst echter naar een entiteit van "
+"het type {actual_entity_type_label}"
 
 msgid "The following errors occurred"
 msgstr "De volgende problemen zijn voorgekomen"
diff --git a/betty/assets/locale/uk/betty.po b/betty/assets/locale/uk/betty.po
index a987891f7..3c183f368 100644
--- a/betty/assets/locale/uk/betty.po
+++ b/betty/assets/locale/uk/betty.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Betty VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2024-07-11 21:30+0100\n"
+"POT-Creation-Date: 2024-07-12 00:13+0100\n"
 "PO-Revision-Date: 2024-02-08 13:08+0000\n"
 "Last-Translator: Rainer Thieringer <rainerthi@gmail.com>\n"
 "Language: uk\n"
@@ -249,6 +249,9 @@ msgid ""
 "outer gzip (*.gz) file."
 msgstr ""
 
+msgid "Could not find a plugin \"{plugin_id}\"."
+msgstr ""
+
 msgid ""
 "Could not find any of the following configuration files in "
 "{project_directory_path}: {configuration_file_names}."
diff --git a/betty/deriver.py b/betty/deriver.py
index d28915b3e..e2ee2e1b9 100644
--- a/betty/deriver.py
+++ b/betty/deriver.py
@@ -73,7 +73,7 @@ async def derive(self) -> None:
                         "Updated {updated_derivations} {event_type} events based on existing information."
                     ).format(
                         updated_derivations=str(updated_derivations),
-                        event_type=derivable_event_type.label().localize(
+                        event_type=derivable_event_type.plugin_label().localize(
                             self._localizer
                         ),
                     )
@@ -84,7 +84,7 @@ async def derive(self) -> None:
                         "Created {created_derivations} additional {event_type} events based on existing information."
                     ).format(
                         created_derivations=str(created_derivations),
-                        event_type=derivable_event_type.label().localize(
+                        event_type=derivable_event_type.plugin_label().localize(
                             self._localizer
                         ),
                     )
diff --git a/betty/extension/cotton_candy/assets/templates/entity/label--event.html.j2 b/betty/extension/cotton_candy/assets/templates/entity/label--event.html.j2
index cf8ba19c3..28512c076 100644
--- a/betty/extension/cotton_candy/assets/templates/entity/label--event.html.j2
+++ b/betty/extension/cotton_candy/assets/templates/entity/label--event.html.j2
@@ -4,7 +4,7 @@
 {%- macro person_label(person) -%}
     {% include 'entity/label--person.html.j2' %}
 {%- endmacro -%}
-{%- set formatted_event = event.event_type.label() | localize -%}
+{%- set formatted_event = event.event_type.plugin_label() | localize -%}
 {%- if event is not has_generated_entity_id and not embedded -%}
     {% set formatted_event = ('<a href="' + event | url + '">' + formatted_event + '</a>') | safe %}
 {%- endif -%}
diff --git a/betty/extension/cotton_candy/assets/templates/entity/meta--person.html.j2 b/betty/extension/cotton_candy/assets/templates/entity/meta--person.html.j2
index 0c1792c85..b4d06c4eb 100644
--- a/betty/extension/cotton_candy/assets/templates/entity/meta--person.html.j2
+++ b/betty/extension/cotton_candy/assets/templates/entity/meta--person.html.j2
@@ -40,10 +40,10 @@
         {%- if formatted_start is defined or formatted_end is defined -%}
             <dl>
                 {%- if formatted_start is defined -%}
-                    <div><dt>{{ start_of_life_event.event_type.label() | localize }}</dt><dd>{{ formatted_start }}</dd></div>
+                    <div><dt>{{ start_of_life_event.event_type.plugin_label() | localize }}</dt><dd>{{ formatted_start }}</dd></div>
                 {%- endif -%}
                 {%- if formatted_end is defined -%}
-                    <div><dt>{{ end_of_life_event.event_type.label() | localize }}</dt><dd>{{ formatted_end }}</dd></div>
+                    <div><dt>{{ end_of_life_event.event_type.plugin_label() | localize }}</dt><dd>{{ formatted_end }}</dd></div>
                 {%- endif -%}
             </dl>
         {%- endif -%}
diff --git a/betty/extension/deriver/__init__.py b/betty/extension/deriver/__init__.py
index fd165e79e..60a0ab7d1 100644
--- a/betty/extension/deriver/__init__.py
+++ b/betty/extension/deriver/__init__.py
@@ -13,6 +13,7 @@
 from betty.extension.privatizer import Privatizer
 from betty.load import PostLoader
 from betty.locale.localizable import _, Localizable
+from betty.model import event_type
 from betty.model.event_type import DerivableEventType
 from betty.project.extension import Extension
 from typing import TYPE_CHECKING
@@ -40,11 +41,7 @@ async def post_load(self) -> None:
         deriver = DeriverApi(
             self.project.ancestry,
             self.project.configuration.lifetime_threshold,
-            {
-                event_type
-                for event_type in self.project.event_types
-                if issubclass(event_type, DerivableEventType)
-            },
+            set(await event_type.ENTITY_TYPE_REPOSITORY.select(DerivableEventType)),
             localizer=self.project.app.localizer,
         )
         await deriver.derive()
diff --git a/betty/extension/gramps/config.py b/betty/extension/gramps/config.py
index f491248f1..e19b6af72 100644
--- a/betty/extension/gramps/config.py
+++ b/betty/extension/gramps/config.py
@@ -9,9 +9,6 @@
 
 from typing_extensions import override
 
-from betty.config import Configuration
-from betty.config.collections.sequence import ConfigurationSequence
-from betty.serde.dump import minimize, Dump, VoidableDump
 from betty.assertion import (
     RequiredField,
     OptionalField,
@@ -19,6 +16,9 @@
     assert_path,
     assert_setattr,
 )
+from betty.config import Configuration
+from betty.config.collections.sequence import ConfigurationSequence
+from betty.serde.dump import minimize, Dump, VoidableDump
 
 
 class FamilyTreeConfiguration(Configuration):
diff --git a/betty/gramps/loader.py b/betty/gramps/loader.py
index ed75db3dd..eafbbb44a 100644
--- a/betty/gramps/loader.py
+++ b/betty/gramps/loader.py
@@ -787,7 +787,9 @@ def _load_event(self, element: ElementTree.Element) -> None:
                 ).format(
                     event_id=event_id,
                     gramps_event_type=gramps_type,
-                    betty_event_type=event_type.label().localize(self._localizer),
+                    betty_event_type=event_type.plugin_label().localize(
+                        self._localizer
+                    ),
                 )
             )
 
diff --git a/betty/model/ancestry.py b/betty/model/ancestry.py
index 6562fc2e1..e762b6f29 100644
--- a/betty/model/ancestry.py
+++ b/betty/model/ancestry.py
@@ -1643,7 +1643,7 @@ def __init__(
     @property
     def label(self) -> Localizable:
         format_kwargs: dict[str, str | Localizable] = {
-            "event_type": self._event_type.label(),
+            "event_type": self._event_type.plugin_label(),
         }
         subjects = [
             presence.person
@@ -1721,7 +1721,7 @@ async def dump_linked_data(self, project: Project) -> DictDump[Dump]:
         dump = await super().dump_linked_data(project)
         dump_context(dump, presences="performer")
         dump["@type"] = "https://schema.org/Event"
-        dump["type"] = self.event_type.name()
+        dump["type"] = self.event_type.plugin_id()
         dump["eventAttendanceMode"] = "https://schema.org/OfflineEventAttendanceMode"
         dump["eventStatus"] = "https://schema.org/EventScheduled"
         dump["presences"] = presences = []
diff --git a/betty/model/event_type.py b/betty/model/event_type.py
index a5a2926d8..b7415777e 100644
--- a/betty/model/event_type.py
+++ b/betty/model/event_type.py
@@ -4,53 +4,24 @@
 
 from __future__ import annotations
 
-from abc import ABC, abstractmethod
 from typing import TYPE_CHECKING, final
 
 from typing_extensions import override
 
 from betty.locale import DEFAULT_LOCALIZER
 from betty.locale.localizable import _, Localizable
+from betty.plugin import Plugin, PluginRepository
+from betty.plugin.entry_point import EntryPointPluginRepository
 
 if TYPE_CHECKING:
     from betty.model.ancestry import Person
 
 
-class EventTypeProvider(ABC):
-    """
-    Provide additional event types.
-    """
-
-    @property
-    @abstractmethod
-    def entity_types(self) -> set[type[EventType]]:
-        """
-        The event types.
-        """
-        pass
-
-
-class EventType(ABC):
+class EventType(Plugin):
     """
     Define an :py:class:`betty.model.ancestry.Event` type.
     """
 
-    @classmethod
-    @abstractmethod
-    def name(cls) -> str:
-        """
-        Get the machine name.
-        """
-        pass
-
-    @classmethod
-    @abstractmethod
-    def label(cls) -> Localizable:
-        """
-        Get the human-readable label.
-        """
-        pass
-
     @classmethod
     def comes_before(cls) -> set[type[EventType]]:
         """
@@ -70,24 +41,44 @@ def comes_after(cls) -> set[type[EventType]]:
         return set()  # pragma: no cover
 
 
-@final
-class UnknownEventType(EventType):
+ENTITY_TYPE_REPOSITORY: PluginRepository[EventType] = EntryPointPluginRepository(
+    "betty.event_type"
+)
+"""
+The event type plugin repository.
+"""
+
+
+class _EventTypeShorthandBase(EventType):
     """
-    Described an event for which no more specific type is known.
+    Provide helpers for deprecated methods.
     """
 
+    _plugin_id: str
+    _plugin_label: Localizable
+
     @override
     @classmethod
-    def name(cls) -> str:
-        return "unknown"  # pragma: no cover
+    def plugin_id(cls) -> str:
+        return cls._plugin_id
 
     @override
     @classmethod
-    def label(cls) -> Localizable:
-        return _("Unknown")  # pragma: no cover
+    def plugin_label(cls) -> Localizable:
+        return cls._plugin_label
 
 
-class DerivableEventType(EventType):
+@final
+class UnknownEventType(_EventTypeShorthandBase):
+    """
+    Described an event for which no more specific type is known.
+    """
+
+    _plugin_id = "unknown"
+    _plugin_label = _("Unknown")
+
+
+class DerivableEventType(_EventTypeShorthandBase):
     """
     Any event that that may be updated by the deriver API.
     """
@@ -171,20 +162,13 @@ def comes_after(cls) -> set[type[EventType]]:
 
 
 @final
-class Birth(CreatableDerivableEventType, StartOfLifeEventType):
+class Birth(CreatableDerivableEventType, StartOfLifeEventType, _EventTypeShorthandBase):
     """
     Someone was born.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "birth"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Birth")  # pragma: no cover
+    _plugin_id = "birth"
+    _plugin_label = _("Birth")
 
     @override
     @classmethod
@@ -193,54 +177,33 @@ def comes_before(cls) -> set[type[EventType]]:
 
 
 @final
-class Baptism(DuringLifeEventType, StartOfLifeEventType):
+class Baptism(DuringLifeEventType, StartOfLifeEventType, _EventTypeShorthandBase):
     """
     Someone was `baptized <https://en.wikipedia.org/wiki/Baptism>`_.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "baptism"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Baptism")  # pragma: no cover
+    _plugin_id = "baptism"
+    _plugin_label = _("Baptism")
 
 
 @final
-class Adoption(DuringLifeEventType):
+class Adoption(DuringLifeEventType, _EventTypeShorthandBase):
     """
     Someone was adopted.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "adoption"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Adoption")  # pragma: no cover
+    _plugin_id = "adoption"
+    _plugin_label = _("Adoption")
 
 
 @final
-class Death(CreatableDerivableEventType, EndOfLifeEventType):
+class Death(CreatableDerivableEventType, EndOfLifeEventType, _EventTypeShorthandBase):
     """
     Someone died.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "death"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Death")  # pragma: no cover
+    _plugin_id = "death"
+    _plugin_label = _("Death")
 
     @override
     @classmethod
@@ -268,88 +231,53 @@ class FinalDispositionEventType(
 
 
 @final
-class Funeral(FinalDispositionEventType):
+class Funeral(FinalDispositionEventType, _EventTypeShorthandBase):
     """
     Someone's funeral took place.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "funeral"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Funeral")  # pragma: no cover
+    _plugin_id = "funeral"
+    _plugin_label = _("Funeral")
 
 
 @final
-class Cremation(FinalDispositionEventType):
+class Cremation(FinalDispositionEventType, _EventTypeShorthandBase):
     """
     Someone was cremated.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "cremation"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Cremation")  # pragma: no cover
+    _plugin_id = "cremation"
+    _plugin_label = _("Cremation")
 
 
 @final
-class Burial(FinalDispositionEventType):
+class Burial(FinalDispositionEventType, _EventTypeShorthandBase):
     """
     Someone was buried.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "burial"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Burial")  # pragma: no cover
+    _plugin_id = "burial"
+    _plugin_label = _("Burial")
 
 
 @final
-class Will(PostDeathEventType):
+class Will(PostDeathEventType, _EventTypeShorthandBase):
     """
     Someone's `will and testament <https://en.wikipedia.org/wiki/Will_and_testament>`_ came into effect.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "will"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Will")  # pragma: no cover
+    _plugin_id = "will"
+    _plugin_label = _("Will")
 
 
 @final
-class Engagement(DuringLifeEventType):
+class Engagement(DuringLifeEventType, _EventTypeShorthandBase):
     """
     People got engaged with the intent to marry.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "engagement"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Engagement")  # pragma: no cover
+    _plugin_id = "engagement"
+    _plugin_label = _("Engagement")
 
     @override
     @classmethod
@@ -358,37 +286,23 @@ def comes_before(cls) -> set[type[EventType]]:
 
 
 @final
-class Marriage(DuringLifeEventType):
+class Marriage(DuringLifeEventType, _EventTypeShorthandBase):
     """
     People were married.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "marriage"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Marriage")  # pragma: no cover
+    _plugin_id = "marriage"
+    _plugin_label = _("Marriage")
 
 
 @final
-class MarriageAnnouncement(DuringLifeEventType):
+class MarriageAnnouncement(DuringLifeEventType, _EventTypeShorthandBase):
     """
     People's marriage was announced.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "marriage-announcement"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Announcement of marriage")  # pragma: no cover
+    _plugin_id = "marriage-announcement"
+    _plugin_label = _("Announcement of marriage")
 
     @override
     @classmethod
@@ -397,20 +311,13 @@ def comes_before(cls) -> set[type[EventType]]:
 
 
 @final
-class Divorce(DuringLifeEventType):
+class Divorce(DuringLifeEventType, _EventTypeShorthandBase):
     """
     People were divorced.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "divorce"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Divorce")  # pragma: no cover
+    _plugin_id = "divorce"
+    _plugin_label = _("Divorce")
 
     @override
     @classmethod
@@ -419,20 +326,13 @@ def comes_after(cls) -> set[type[EventType]]:
 
 
 @final
-class DivorceAnnouncement(DuringLifeEventType):
+class DivorceAnnouncement(DuringLifeEventType, _EventTypeShorthandBase):
     """
     People's divorce was announced.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "divorce-announcement"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Announcement of divorce")  # pragma: no cover
+    _plugin_id = "divorce-announcement"
+    _plugin_label = _("Announcement of divorce")
 
     @override
     @classmethod
@@ -446,155 +346,92 @@ def comes_before(cls) -> set[type[EventType]]:
 
 
 @final
-class Residence(DuringLifeEventType):
+class Residence(DuringLifeEventType, _EventTypeShorthandBase):
     """
     Someone resided/lived in a place.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "residence"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Residence")  # pragma: no cover
+    _plugin_id = "residence"
+    _plugin_label = _("Residence")
 
 
 @final
-class Immigration(DuringLifeEventType):
+class Immigration(DuringLifeEventType, _EventTypeShorthandBase):
     """
     Someone immigrated to a place.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "immigration"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Immigration")  # pragma: no cover
+    _plugin_id = "immigration"
+    _plugin_label = _("Immigration")
 
 
 @final
-class Emigration(DuringLifeEventType):
+class Emigration(_EventTypeShorthandBase, DuringLifeEventType):
     """
     Someone emigrated from a place.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "emigration"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Emigration")  # pragma: no cover
+    _plugin_id = "emigration"
+    _plugin_label = _("Emigration")
 
 
 @final
-class Occupation(DuringLifeEventType):
+class Occupation(_EventTypeShorthandBase, DuringLifeEventType):
     """
     Someone's occupation, e.g. their main recurring activity.
 
     This may include employment, education, stay at home parent, etc.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "occupation"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Occupation")  # pragma: no cover
+    _plugin_id = "occupation"
+    _plugin_label = _("Occupation")
 
 
 @final
-class Retirement(DuringLifeEventType):
+class Retirement(_EventTypeShorthandBase, DuringLifeEventType):
     """
     Someone `retired <https://en.wikipedia.org/wiki/Retirement>`_.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "retirement"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Retirement")  # pragma: no cover
+    _plugin_id = "retirement"
+    _plugin_label = _("Retirement")
 
 
 @final
-class Correspondence(EventType):
+class Correspondence(_EventTypeShorthandBase):
     """
     People corresponded with each other.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "correspondence"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Correspondence")  # pragma: no cover
+    _plugin_id = "correspondence"
+    _plugin_label = _("Correspondence")
 
 
 @final
-class Confirmation(DuringLifeEventType):
+class Confirmation(_EventTypeShorthandBase, DuringLifeEventType):
     """
     Someone's `confirmation <https://en.wikipedia.org/wiki/Confirmation>`_ took place.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "confirmation"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Confirmation")  # pragma: no cover
+    _plugin_id = "confirmation"
+    _plugin_label = _("Confirmation")
 
 
 @final
-class Missing(DuringLifeEventType):
+class Missing(_EventTypeShorthandBase, DuringLifeEventType):
     """
     Someone went missing.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "missing"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Missing")  # pragma: no cover
+    _plugin_id = "missing"
+    _plugin_label = _("Missing")
 
 
 @final
-class Conference(DuringLifeEventType):
+class Conference(_EventTypeShorthandBase, DuringLifeEventType):
     """
     A conference between people took place.
     """
 
-    @override
-    @classmethod
-    def name(cls) -> str:
-        return "conference"  # pragma: no cover
-
-    @override
-    @classmethod
-    def label(cls) -> Localizable:
-        return _("Conference")  # pragma: no cover
+    _plugin_id = "conference"
+    _plugin_label = _("Conference")
diff --git a/betty/plugin/__init__.py b/betty/plugin/__init__.py
index cfd82c0df..a619a1497 100644
--- a/betty/plugin/__init__.py
+++ b/betty/plugin/__init__.py
@@ -13,11 +13,22 @@
 from abc import ABC, abstractmethod
 from typing import TypeVar, Generic, Self, overload, TYPE_CHECKING, TypeAlias, TypeGuard
 
+from betty.error import UserFacingError
+from betty.locale.localizable import _
+
 if TYPE_CHECKING:
     from betty.locale.localizable import Localizable
     from collections.abc import AsyncIterator, Sequence
 
 
+class PluginError(UserFacingError):
+    """
+    Any error originating from the Plugin API.
+    """
+
+    pass
+
+
 PluginId: TypeAlias = str
 """
 A plugin ID is a string that meets these criteria:
@@ -74,7 +85,7 @@ def plugin_description(cls) -> Localizable | None:
 _PluginT = TypeVar("_PluginT", bound=Plugin)
 
 
-class PluginNotFound(ValueError):
+class PluginNotFound(PluginError):
     """
     Raised when a plugin cannot be found.
     """
@@ -84,7 +95,9 @@ def new(cls, plugin_id: PluginId) -> Self:
         """
         Create a new instance.
         """
-        return cls(f'Could not find a plugin "{plugin_id}".')
+        return cls(
+            _('Could not find a plugin "{plugin_id}".').format(plugin_id=plugin_id)
+        )
 
 
 _PluginMixinOneT = TypeVar("_PluginMixinOneT")
diff --git a/betty/project/__init__.py b/betty/project/__init__.py
index b5b9507c1..a1be75c5e 100644
--- a/betty/project/__init__.py
+++ b/betty/project/__init__.py
@@ -19,6 +19,7 @@
 from typing_extensions import override
 
 from betty import fs
+from betty import model
 from betty.assertion import (
     Assertion,
     RequiredField,
@@ -47,33 +48,8 @@
 from betty.hashid import hashid
 from betty.locale import DEFAULT_LOCALE, LocalizerRepository
 from betty.locale.localizable import _
-from betty import model
 from betty.model import Entity, UserFacingEntity
 from betty.model.ancestry import Ancestry, Person, Event, Place, Source
-from betty.model.event_type import (
-    EventType,
-    EventTypeProvider,
-    Birth,
-    Baptism,
-    Adoption,
-    Death,
-    Funeral,
-    Cremation,
-    Burial,
-    Will,
-    Engagement,
-    Marriage,
-    MarriageAnnouncement,
-    Divorce,
-    DivorceAnnouncement,
-    Residence,
-    Immigration,
-    Emigration,
-    Occupation,
-    Retirement,
-    Correspondence,
-    Confirmation,
-)
 from betty.plugin.assertion import assert_plugin
 from betty.project import extension
 from betty.project.extension import (
@@ -103,7 +79,6 @@
     from betty.url import LocalizedUrlGenerator, StaticUrlGenerator
     from betty.jinja2 import Environment
 
-
 _EntityT = TypeVar("_EntityT", bound=Entity)
 
 
@@ -1078,7 +1053,6 @@ def __init__(
         self._extensions: Extensions | None = None
         self._dispatcher: ExtensionDispatcher | None = None
         self._entity_types: set[type[Entity]] | None = None
-        self._event_types: set[type[EventType]] | None = None
 
     @classmethod
     @asynccontextmanager
@@ -1276,36 +1250,3 @@ def dispatcher(self) -> Dispatcher:
             self._dispatcher = ExtensionDispatcher(self.extensions)
 
         return self._dispatcher
-
-    @property
-    def event_types(self) -> set[type[EventType]]:
-        """
-        The available event types.
-        """
-        if self._event_types is None:
-            self._assert_bootstrapped()
-            self._event_types = set(
-                wait_to_thread(self.dispatcher.dispatch(EventTypeProvider)())
-            ) | {
-                Birth,
-                Baptism,
-                Adoption,
-                Death,
-                Funeral,
-                Cremation,
-                Burial,
-                Will,
-                Engagement,
-                Marriage,
-                MarriageAnnouncement,
-                Divorce,
-                DivorceAnnouncement,
-                Residence,
-                Immigration,
-                Emigration,
-                Occupation,
-                Retirement,
-                Correspondence,
-                Confirmation,
-            }
-        return self._event_types
diff --git a/betty/tests/coverage/test_coverage.py b/betty/tests/coverage/test_coverage.py
index 90b32b953..a30229d43 100644
--- a/betty/tests/coverage/test_coverage.py
+++ b/betty/tests/coverage/test_coverage.py
@@ -540,9 +540,7 @@ class TestKnownToBeMissing:
         "Emigration": TestKnownToBeMissing,
         "EndOfLifeEventType": TestKnownToBeMissing,
         "Engagement": TestKnownToBeMissing,
-        # This is an abstract class.
         "EventType": TestKnownToBeMissing,
-        "EventTypeProvider": TestKnownToBeMissing,
         "FinalDispositionEventType": TestKnownToBeMissing,
         "Funeral": TestKnownToBeMissing,
         "Immigration": TestKnownToBeMissing,
@@ -584,7 +582,8 @@ class TestKnownToBeMissing:
             # This is an interface method.
             "plugin_label": TestKnownToBeMissing,
         },
-        # This is an interface.
+        # This is a base/sentinel class.
+        "PluginError": TestKnownToBeMissing,
         "PluginRepository": {
             # This is an interface method.
             "__aiter__": TestKnownToBeMissing,
diff --git a/betty/tests/extension/deriver/test___init__.py b/betty/tests/extension/deriver/test___init__.py
index abd94e1ab..3f87644ff 100644
--- a/betty/tests/extension/deriver/test___init__.py
+++ b/betty/tests/extension/deriver/test___init__.py
@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from typing_extensions import override
+
 from betty.extension.deriver import Deriver
 from betty.load import load
 from betty.locale import DateRange, Date
@@ -19,28 +21,31 @@
 from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
+    from betty.plugin import PluginId
     from betty.app import App
 
 
-class _DummyEventTypeBase(EventType):
+class DummyEventType(EventType):
+    @override
     @classmethod
-    def name(cls) -> str:
+    def plugin_id(cls) -> PluginId:
         return cls.__name__
 
+    @override
     @classmethod
-    def label(cls) -> Localizable:
+    def plugin_label(cls) -> Localizable:
         return plain("")
 
 
-class Ignored(_DummyEventTypeBase):
+class Ignored(DummyEventType):
     pass
 
 
-class ComesBeforeReference(_DummyEventTypeBase):
+class ComesBeforeReference(DummyEventType):
     pass
 
 
-class ComesAfterReference(_DummyEventTypeBase):
+class ComesAfterReference(DummyEventType):
     pass
 
 
@@ -54,7 +59,7 @@ class ComesBeforeCreatableDerivable(CreatableDerivableEventType, ComesBeforeDeri
     pass
 
 
-class ComesAfterDerivable(DerivableEventType):
+class ComesAfterDerivable(DerivableEventType, DummyEventType):
     @classmethod
     def comes_after(cls) -> set[type[EventType]]:
         return {ComesAfterReference}
@@ -64,7 +69,7 @@ class ComesAfterCreatableDerivable(CreatableDerivableEventType, ComesAfterDeriva
     pass
 
 
-class ComesBeforeAndAfterDerivable(DerivableEventType):
+class ComesBeforeAndAfterDerivable(DerivableEventType, DummyEventType):
     @classmethod
     def comes_before(cls) -> set[type[EventType]]:
         return {Ignored}
diff --git a/betty/tests/locale/__init__.py b/betty/tests/locale/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/betty/tests/project/test___init__.py b/betty/tests/project/test___init__.py
index 15466d94e..e435dec87 100644
--- a/betty/tests/project/test___init__.py
+++ b/betty/tests/project/test___init__.py
@@ -1511,10 +1511,6 @@ async def test_dispatcher(self, new_temporary_app: App) -> None:
         async with Project.new_temporary(new_temporary_app) as sut, sut:
             sut.dispatcher  # noqa B018
 
-    async def test_event_types(self, new_temporary_app: App) -> None:
-        async with Project.new_temporary(new_temporary_app) as sut, sut:
-            assert len(sut.event_types) > 0
-
     async def test_jinja2_environment(self, new_temporary_app: App) -> None:
         async with Project.new_temporary(new_temporary_app) as sut, sut:
             sut.jinja2_environment  # noqa B018
diff --git a/betty/tests/test_deriver.py b/betty/tests/test_deriver.py
index e7f047db3..ca3770afb 100644
--- a/betty/tests/test_deriver.py
+++ b/betty/tests/test_deriver.py
@@ -4,7 +4,6 @@
 
 from betty.deriver import Deriver
 from betty.locale import DateRange, Date, Datey, DEFAULT_LOCALIZER
-from betty.locale.localizable import plain, Localizable
 from betty.model import record_added
 from betty.model.ancestry import Person, Presence, Event, Ancestry
 from betty.model.presence_role import Subject
@@ -14,31 +13,22 @@
     EventType,
 )
 from betty.project import DEFAULT_LIFETIME_THRESHOLD
+from betty.tests.extension.deriver.test___init__ import DummyEventType
 
 
-class DeriverTestEventType(EventType):
-    @classmethod
-    def name(cls) -> str:
-        return repr(cls)
-
-    @classmethod
-    def label(cls) -> Localizable:
-        return plain(repr(cls))
-
-
-class Ignored(DeriverTestEventType):
+class Ignored(DummyEventType):
     pass
 
 
-class ComesBeforeReference(DeriverTestEventType):
+class ComesBeforeReference(DummyEventType):
     pass
 
 
-class ComesAfterReference(DeriverTestEventType):
+class ComesAfterReference(DummyEventType):
     pass
 
 
-class ComesBeforeDerivable(DeriverTestEventType, DerivableEventType):
+class ComesBeforeDerivable(DummyEventType, DerivableEventType):
     @classmethod
     def comes_before(cls) -> set[type[EventType]]:
         return {ComesBeforeReference}
@@ -48,7 +38,7 @@ class ComesBeforeCreatableDerivable(ComesBeforeDerivable, CreatableDerivableEven
     pass
 
 
-class ComesAfterDerivable(DeriverTestEventType, DerivableEventType):
+class ComesAfterDerivable(DummyEventType, DerivableEventType):
     @classmethod
     def comes_after(cls) -> set[type[EventType]]:
         return {ComesAfterReference}
@@ -58,7 +48,7 @@ class ComesAfterCreatableDerivable(ComesAfterDerivable, CreatableDerivableEventT
     pass
 
 
-class ComesBeforeAndAfterDerivable(DeriverTestEventType, DerivableEventType):
+class ComesBeforeAndAfterDerivable(DummyEventType, DerivableEventType):
     @classmethod
     def comes_before(cls) -> set[type[EventType]]:
         return {Ignored}
@@ -69,7 +59,7 @@ def comes_after(cls) -> set[type[EventType]]:
 
 
 class ComesBeforeAndAfterCreatableDerivable(
-    DeriverTestEventType, CreatableDerivableEventType
+    DummyEventType, CreatableDerivableEventType
 ):
     pass
 
diff --git a/pyproject.toml b/pyproject.toml
index 61bab0b80..8f8106636 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -101,6 +101,31 @@ betty = 'betty.cli:main'
 'place' = 'betty.model.ancestry:Place'
 'source' = 'betty.model.ancestry:Source'
 
+[project.entry-points.'betty.event_type']
+'adoption' = 'betty.model.event_type:Adoption'
+'baptism' = 'betty.model.event_type:Baptism'
+'birth' = 'betty.model.event_type:Birth'
+'burial' = 'betty.model.event_type:Burial'
+'conference' = 'betty.model.event_type:Conference'
+'confirmation' = 'betty.model.event_type:Confirmation'
+'correspondence' = 'betty.model.event_type:Correspondence'
+'cremation' = 'betty.model.event_type:Cremation'
+'death' = 'betty.model.event_type:Death'
+'divorce' = 'betty.model.event_type:Divorce'
+'divorce-announcement' = 'betty.model.event_type:DivorceAnnouncement'
+'emigration' = 'betty.model.event_type:Emigration'
+'engagement' = 'betty.model.event_type:Engagement'
+'funeral' = 'betty.model.event_type:Funeral'
+'immigration' = 'betty.model.event_type:Immigration'
+'marriage' = 'betty.model.event_type:Marriage'
+'marriage-announcement' = 'betty.model.event_type:MarriageAnnouncement'
+'missing' = 'betty.model.event_type:Missing'
+'occupation' = 'betty.model.event_type:Occupation'
+'residence' = 'betty.model.event_type:Residence'
+'retirement' = 'betty.model.event_type:Retirement'
+'unknown' = 'betty.model.event_type:UnknownEventType'
+'will' = 'betty.model.event_type:Will'
+
 [project.entry-points.'betty.extension']
 'cotton-candy' = 'betty.extension.cotton_candy:CottonCandy'
 'demo' = 'betty.extension.demo:Demo'