diff --git a/crabfit-backend/cron.yaml b/crabfit-backend/cron.yaml
index a999bc7..5f7911d 100644
--- a/crabfit-backend/cron.yaml
+++ b/crabfit-backend/cron.yaml
@@ -7,3 +7,7 @@ cron:
     url: /tasks/legacyCleanup
     schedule: every tuesday 09:00
     target: api
+  - description: "remove people with an event id that no longer exists"
+    url: /tasks/removeOrphans
+    schedule: 1st wednesday of month 09:00
+    target: api
diff --git a/crabfit-backend/index.js b/crabfit-backend/index.js
index 7dc0b21..47f3dab 100644
--- a/crabfit-backend/index.js
+++ b/crabfit-backend/index.js
@@ -16,6 +16,7 @@ const updatePerson = require('./routes/updatePerson');
 
 const taskCleanup = require('./routes/taskCleanup');
 const taskLegacyCleanup = require('./routes/taskLegacyCleanup');
+const taskRemoveOrphans = require('./routes/taskRemoveOrphans');
 
 const app = express();
 const port = 8080;
@@ -53,6 +54,7 @@ app.patch('/event/:eventId/people/:personName', updatePerson);
 // Tasks
 app.get('/tasks/cleanup', taskCleanup);
 app.get('/tasks/legacyCleanup', taskLegacyCleanup);
+app.get('/tasks/removeOrphans', taskRemoveOrphans);
 
 app.listen(port, () => {
 	console.log(`Crabfit API listening at http://localhost:${port} in ${process.env.NODE_ENV === 'production' ? 'prod' : 'dev'} mode`)
diff --git a/crabfit-backend/routes/taskCleanup.js b/crabfit-backend/routes/taskCleanup.js
index 28182e5..fa87ae9 100644
--- a/crabfit-backend/routes/taskCleanup.js
+++ b/crabfit-backend/routes/taskCleanup.js
@@ -1,6 +1,10 @@
 const dayjs = require('dayjs');
 
 module.exports = async (req, res) => {
+  if (req.header('X-Appengine-Cron') === undefined) {
+    return res.status(400).send('This task can only be run from a cron job');
+  }
+  
   const threeMonthsAgo = dayjs().subtract(3, 'month').unix();
 
   console.log(`Running cleanup task at ${dayjs().format('h:mma D MMM YYYY')}`);
diff --git a/crabfit-backend/routes/taskLegacyCleanup.js b/crabfit-backend/routes/taskLegacyCleanup.js
index cbb3e6e..1d7a64d 100644
--- a/crabfit-backend/routes/taskLegacyCleanup.js
+++ b/crabfit-backend/routes/taskLegacyCleanup.js
@@ -1,6 +1,10 @@
 const dayjs = require('dayjs');
 
 module.exports = async (req, res) => {
+  if (req.header('X-Appengine-Cron') === undefined) {
+    return res.status(400).send('This task can only be run from a cron job');
+  }
+  
   const threeMonthsAgo = dayjs().subtract(3, 'month').unix();
 
   console.log(`Running LEGACY cleanup task at ${dayjs().format('h:mma D MMM YYYY')}`);
diff --git a/crabfit-backend/routes/taskRemoveOrphans.js b/crabfit-backend/routes/taskRemoveOrphans.js
new file mode 100644
index 0000000..320d276
--- /dev/null
+++ b/crabfit-backend/routes/taskRemoveOrphans.js
@@ -0,0 +1,46 @@
+const dayjs = require('dayjs');
+
+module.exports = async (req, res) => {
+  if (req.header('X-Appengine-Cron') === undefined) {
+    return res.status(400).send('This task can only be run from a cron job');
+  }
+
+  const threeMonthsAgo = dayjs().subtract(3, 'month').unix();
+
+  console.log(`Running orphan removal task at ${dayjs().format('h:mma D MMM YYYY')}`);
+
+	try {
+    // Fetch people that are older than 3 months
+    const peopleQuery = req.datastore.createQuery(req.types.person).filter('created', '<', threeMonthsAgo);
+		let oldPeople = (await req.datastore.runQuery(peopleQuery))[0];
+
+		if (oldPeople && oldPeople.length > 0) {
+      console.log(`Found ${oldPeople.length} people older than 3 months, checking for events`);
+
+      // Fetch events linked to the people discovered
+      let peopleWithoutEvents = 0;
+      await Promise.all(oldPeople.map(async (person) => {
+        let event = (await req.datastore.get(req.datastore.key([req.types.event, person.eventId])))[0];
+
+        if (!event) {
+          peopleWithoutEvents++;
+          await req.datastore.delete(person[req.datastore.KEY]);
+        }
+      }));
+
+      if (peopleWithoutEvents > 0) {
+        console.log(`Orphan removal successful: ${oldEventIds.length} events and ${peopleDiscovered} people removed`);
+        res.sendStatus(200);
+      } else {
+        console.log(`Found 0 people without events, ending orphan removal`);
+  			res.sendStatus(404);
+      }
+		} else {
+      console.log(`Found 0 people older than 3 months, ending orphan removal`);
+			res.sendStatus(404);
+		}
+	} catch (e) {
+		console.error(e);
+		res.sendStatus(404);
+	}
+};
diff --git a/crabfit-backend/swagger.yaml b/crabfit-backend/swagger.yaml
index 7e15592..ad68a66 100644
--- a/crabfit-backend/swagger.yaml
+++ b/crabfit-backend/swagger.yaml
@@ -243,3 +243,16 @@ paths:
           description: "Not found"
         400:
           description: "Not called from a cron job"
+  "/tasks/removeOrphans":
+    get:
+      summary: "Deletes people if the event they were created under no longer exists"
+      operationId: "taskRemoveOrphans"
+      tags:
+        - tasks
+      responses:
+        200:
+          description: "OK"
+        404:
+          description: "Not found"
+        400:
+          description: "Not called from a cron job"
diff --git a/crabfit-frontend/src/components/AvailabilityViewer/AvailabilityViewer.tsx b/crabfit-frontend/src/components/AvailabilityViewer/AvailabilityViewer.tsx
index aec8520..579a074 100644
--- a/crabfit-frontend/src/components/AvailabilityViewer/AvailabilityViewer.tsx
+++ b/crabfit-frontend/src/components/AvailabilityViewer/AvailabilityViewer.tsx
@@ -7,7 +7,7 @@ import relativeTime from 'dayjs/plugin/relativeTime';
 
 import { useSettingsStore, useLocaleUpdateStore } from 'stores';
 
-import { Legend, Center } from 'components';
+import { Legend } from 'components';
 import {
   Wrapper,
   ScrollWrapper,
diff --git a/crabfit-frontend/src/pages/Event/Event.tsx b/crabfit-frontend/src/pages/Event/Event.tsx
index 5c4f346..1a63e58 100644
--- a/crabfit-frontend/src/pages/Event/Event.tsx
+++ b/crabfit-frontend/src/pages/Event/Event.tsx
@@ -96,7 +96,7 @@ const Event = (props) => {
     };
 
     fetchEvent();
-  }, [id, addRecent]);
+  }, [id, addRecent, removeRecent]);
 
   useEffect(() => {
     const fetchPeople = async () => {