diff --git a/backend/src/main/java/org/raddatz/familienarchiv/relationship/RelationshipInferenceService.java b/backend/src/main/java/org/raddatz/familienarchiv/relationship/RelationshipInferenceService.java
index b2ef53c3..bc820e6f 100644
--- a/backend/src/main/java/org/raddatz/familienarchiv/relationship/RelationshipInferenceService.java
+++ b/backend/src/main/java/org/raddatz/familienarchiv/relationship/RelationshipInferenceService.java
@@ -5,7 +5,7 @@ import org.raddatz.familienarchiv.model.Person;
 import org.raddatz.familienarchiv.relationship.dto.InferredRelationshipDTO;
 import org.raddatz.familienarchiv.relationship.dto.InferredRelationshipWithPersonDTO;
 import org.raddatz.familienarchiv.relationship.dto.PersonNodeDTO;
-import org.raddatz.familienarchiv.repository.PersonRepository;
+import org.raddatz.familienarchiv.service.PersonService;
 import org.springframework.stereotype.Service;
 
 import java.util.*;
@@ -28,7 +28,7 @@ public class RelationshipInferenceService {
     private static final Map<List<RelationToken>, String> LABEL_MAP = buildLabelMap();
 
     private final PersonRelationshipRepository relationshipRepository;
-    private final PersonRepository personRepository;
+    private final PersonService personService;
 
     private static Map<List<RelationToken>, String> buildLabelMap() {
         Map<List<RelationToken>, String> m = new HashMap<>();
@@ -83,7 +83,7 @@ public class RelationshipInferenceService {
 
         List<UUID> ids = new ArrayList<>(shortestPaths.keySet());
         Map<UUID, Person> byId = new HashMap<>();
-        for (Person p : personRepository.findAllById(ids)) {
+        for (Person p : personService.getAllById(ids)) {
             byId.put(p.getId(), p);
         }
 
diff --git a/backend/src/test/java/org/raddatz/familienarchiv/relationship/RelationshipInferenceServiceTest.java b/backend/src/test/java/org/raddatz/familienarchiv/relationship/RelationshipInferenceServiceTest.java
index 894f0ceb..a146b564 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/relationship/RelationshipInferenceServiceTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/relationship/RelationshipInferenceServiceTest.java
@@ -7,7 +7,8 @@ import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 import org.raddatz.familienarchiv.model.Person;
 import org.raddatz.familienarchiv.relationship.dto.InferredRelationshipDTO;
-import org.raddatz.familienarchiv.repository.PersonRepository;
+import org.raddatz.familienarchiv.relationship.dto.InferredRelationshipWithPersonDTO;
+import org.raddatz.familienarchiv.service.PersonService;
 
 import java.time.Instant;
 import java.util.List;
@@ -17,6 +18,7 @@ import java.util.UUID;
 import static java.util.Collections.emptyList;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.ArgumentMatchers.anyCollection;
+import static org.mockito.ArgumentMatchers.anyList;
 import static org.mockito.Mockito.when;
 import static org.raddatz.familienarchiv.relationship.RelationToken.*;
 import static org.raddatz.familienarchiv.relationship.RelationType.*;
@@ -34,7 +36,7 @@ import static org.raddatz.familienarchiv.relationship.RelationType.*;
 class RelationshipInferenceServiceTest {
 
     @Mock PersonRelationshipRepository relationshipRepository;
-    @Mock PersonRepository personRepository;
+    @Mock PersonService personService;
     @InjectMocks RelationshipInferenceService service;
 
     // --- 1: parent ---
@@ -302,6 +304,20 @@ class RelationshipInferenceServiceTest {
         assertThat(service.infer(a.getId(), b.getId())).isEmpty();
     }
 
+    // --- 19: findAllFor delegates person resolution to PersonService ---
+    @Test
+    void findAllFor_resolves_persons_via_PersonService() {
+        Person parent = person();
+        Person child = person();
+        givenEdges(parentOf(parent, child));
+        when(personService.getAllById(anyList())).thenReturn(List.of(child));
+
+        List<InferredRelationshipWithPersonDTO> results = service.findAllFor(parent.getId());
+
+        assertThat(results).hasSize(1);
+        assertThat(results.get(0).person().displayName()).isEqualTo(child.getDisplayName());
+    }
+
     // --- helpers ---
 
     private void givenEdges(PersonRelationship... edges) {