diff --git a/src/Bundle/ChillPersonBundle/Entity/Household/Household.php b/src/Bundle/ChillPersonBundle/Entity/Household/Household.php
index 19bda3785..91d9cea57 100644
--- a/src/Bundle/ChillPersonBundle/Entity/Household/Household.php
+++ b/src/Bundle/ChillPersonBundle/Entity/Household/Household.php
@@ -14,6 +14,7 @@ namespace Chill\PersonBundle\Entity\Household;
 use ArrayIterator;
 use Chill\MainBundle\Entity\Address;
 use Chill\MainBundle\Entity\Embeddable\CommentEmbeddable;
+use Chill\PersonBundle\Entity\Person;
 use Chill\PersonBundle\Validator\Constraints\Household\MaxHolder;
 use DateTime;
 use DateTimeImmutable;
@@ -354,7 +355,12 @@ class Household
         return $this->members;
     }
 
-    public function getMembersDuringMembership(HouseholdMember $membership)
+    /**
+     * get all the members during a given membership.
+     *
+     * @return Collection|HouseholdMember[]
+     */
+    public function getMembersDuringMembership(HouseholdMember $membership): Collection
     {
         return $this->getMembersOnRange(
             $membership->getStartDate(),
@@ -441,6 +447,28 @@ class Household
         return $this->getNonCurrentMembers($now)->matching($criteria);
     }
 
+    /**
+     * get all the unique persons during a given membership.
+     *
+     * same as @see(self::getMembersDuringMembership}, except that the collection is filtered to
+     * return unique members.
+     *
+     * @return Collection|Person[]
+     */
+    public function getPersonsDuringMembership(HouseholdMember $member): Collection
+    {
+        // make list unique
+        $membersByHash = [];
+
+        foreach ($this->getMembersDuringMembership($member) as $m) {
+            if (null !== $m && null !== $m->getPerson()) {
+                $membersByHash[spl_object_hash($m->getPerson())] = $m->getPerson();
+            }
+        }
+
+        return new ArrayCollection(array_values($membersByHash));
+    }
+
     public function getPreviousAddressOf(Address $address): ?Address
     {
         $iterator = new ArrayIterator($this->getAddressesOrdered());
diff --git a/src/Bundle/ChillPersonBundle/Resources/views/Person/household_history.html.twig b/src/Bundle/ChillPersonBundle/Resources/views/Person/household_history.html.twig
index 6f7ce0a06..6cacbdf96 100644
--- a/src/Bundle/ChillPersonBundle/Resources/views/Person/household_history.html.twig
+++ b/src/Bundle/ChillPersonBundle/Resources/views/Person/household_history.html.twig
@@ -65,18 +65,18 @@
                     <h3>{{ 'household.Members at same time'|trans }}</h3>
                 </div>
                 <div class="wl-col list">
-                    {% set simultaneous = p.household.getMembersDuringMembership(p) %}
+                    {% set simultaneous = p.household.getPersonsDuringMembership(p) %}
                     {% if simultaneous|length == 0 %}
                         <p class="chill-no-data-statement">
                             {{ 'household.Any simultaneous members'|trans }}
                         </p>
                     {% else %}
-                        {% for m in simultaneous -%}
+                        {% for person in simultaneous -%}
                             {% include '@ChillMain/OnTheFly/_insert_vue_onthefly.html.twig' with {
                                 action: 'show', displayBadge: true,
-                                targetEntity: { name: 'person', id: m.person.id },
-                                buttonText: m.person|chill_entity_render_string,
-                                isDead: m.person.deathdate is not null
+                                targetEntity: { name: 'person', id: person.id },
+                                buttonText: person|chill_entity_render_string,
+                                isDead: person.deathdate is not null
                             } %}
                         {%- endfor -%}
                     {% endif %}
diff --git a/src/Bundle/ChillPersonBundle/Tests/Entity/Household/HouseholdTest.php b/src/Bundle/ChillPersonBundle/Tests/Entity/Household/HouseholdTest.php
index 7cf8af3e5..b7b805be8 100644
--- a/src/Bundle/ChillPersonBundle/Tests/Entity/Household/HouseholdTest.php
+++ b/src/Bundle/ChillPersonBundle/Tests/Entity/Household/HouseholdTest.php
@@ -135,4 +135,51 @@ final class HouseholdTest extends TestCase
         $this->assertEquals(new DateTimeImmutable('2021-12-31'), $second->getStartDate());
         $this->assertEquals(new DateTimeImmutable('2021-12-31'), $inside->getEndDate());
     }
+
+    public function testHouseholdGetPersonsDuringMembership()
+    {
+        $household = new Household();
+        $person1 = new Person();
+        $person2 = new Person();
+        $personOut = new Person();
+
+        $household->addMember(
+            $member1 = (new HouseholdMember())
+                ->setStartDate(new DateTimeImmutable('2021-01-01'))
+                ->setEndDate(new DateTimeImmutable('2021-12-01'))
+                ->setPerson($person1)
+        );
+
+        $household->addMember(
+            $member2a = (new HouseholdMember())
+                ->setStartDate(new DateTimeImmutable('2021-01-01'))
+                ->setEndDate(new DateTimeImmutable('2021-05-01'))
+                ->setPerson($person2)
+        );
+
+        $household->addMember(
+            $member2b = (new HouseholdMember())
+                ->setStartDate(new DateTimeImmutable('2021-11-01'))
+                ->setEndDate(new DateTimeImmutable('2022-06-01'))
+                ->setPerson($person2)
+        );
+
+        $household->addMember(
+            $memberOut = (new HouseholdMember())
+                ->setStartDate(new DateTimeImmutable('2019-01-01'))
+                ->setEndDate(new DateTimeImmutable('2019-12-01'))
+                ->setPerson($personOut)
+        );
+
+        $this->assertCount(0, $household->getPersonsDuringMembership($memberOut));
+
+        $this->assertCount(1, $household->getPersonsDuringMembership($member1));
+        $this->assertContains($person2, $household->getPersonsDuringMembership($member1));
+
+        $this->assertCount(1, $household->getPersonsDuringMembership($member2a));
+        $this->assertContains($person1, $household->getPersonsDuringMembership($member2a));
+
+        $this->assertCount(1, $household->getPersonsDuringMembership($member2b));
+        $this->assertContains($person1, $household->getPersonsDuringMembership($member2b));
+    }
 }