diff --git a/backend/utils/syncDatabase.js b/backend/utils/syncDatabase.js
index 26c7c8f..32ed033 100644
--- a/backend/utils/syncDatabase.js
+++ b/backend/utils/syncDatabase.js
@@ -136,7 +136,23 @@ const syncDatabase = async () => {
                 console.log(`✅ ${deletedCount6} verwaiste user_house Einträge entfernt`);
             }
 
-            if (deletedCount1 === 0 && deletedCount2 === 0 && deletedCount3 === 0 && deletedCount4 === 0 && deletedCount5 === 0 && deletedCount6 === 0) {
+            // Cleanup child_relation mit ungültigen father_character_id, mother_character_id oder child_character_id
+            const result7 = await sequelize.query(`
+                DELETE FROM falukant_data.child_relation
+                WHERE father_character_id NOT IN (
+                    SELECT id FROM falukant_data.character
+                ) OR mother_character_id NOT IN (
+                    SELECT id FROM falukant_data.character
+                ) OR child_character_id NOT IN (
+                    SELECT id FROM falukant_data.character
+                );
+            `);
+            const deletedCount7 = result7[1] || 0;
+            if (deletedCount7 > 0) {
+                console.log(`✅ ${deletedCount7} verwaiste child_relation Einträge entfernt`);
+            }
+
+            if (deletedCount1 === 0 && deletedCount2 === 0 && deletedCount3 === 0 && deletedCount4 === 0 && deletedCount5 === 0 && deletedCount6 === 0 && deletedCount7 === 0) {
                 console.log("✅ Keine verwaisten Einträge gefunden");
             }
             } catch (e) {
@@ -343,7 +359,23 @@ const syncDatabaseForDeployment = async () => {
                 console.log(`✅ ${deletedCount6} verwaiste user_house Einträge entfernt`);
             }
 
-            if (deletedCount1 === 0 && deletedCount2 === 0 && deletedCount3 === 0 && deletedCount4 === 0 && deletedCount5 === 0 && deletedCount6 === 0) {
+            // Cleanup child_relation mit ungültigen father_character_id, mother_character_id oder child_character_id
+            const result7 = await sequelize.query(`
+                DELETE FROM falukant_data.child_relation
+                WHERE father_character_id NOT IN (
+                    SELECT id FROM falukant_data.character
+                ) OR mother_character_id NOT IN (
+                    SELECT id FROM falukant_data.character
+                ) OR child_character_id NOT IN (
+                    SELECT id FROM falukant_data.character
+                );
+            `);
+            const deletedCount7 = result7[1] || 0;
+            if (deletedCount7 > 0) {
+                console.log(`✅ ${deletedCount7} verwaiste child_relation Einträge entfernt`);
+            }
+
+            if (deletedCount1 === 0 && deletedCount2 === 0 && deletedCount3 === 0 && deletedCount4 === 0 && deletedCount5 === 0 && deletedCount6 === 0 && deletedCount7 === 0) {
                 console.log("✅ Keine verwaisten Einträge gefunden");
             }
         } catch (e) {