| Name | Birth date | Relationship with Isabella Holdt |
|---|
| King of Portugal, Alphonso I Henriques | juli 25, 1110 | 25th great-grandfather |
| King of Portugal, Robert I Capet | 1011 | 28th great-grandfather |
| King of Portugal, Sancho I Henriques | 1154 | 24th great-grandfather |
| King of Pundra and Sindhu, Simhala | | Husband of the 72nd great-grandaunt |
| King of Pundra, Kalabhra | | Husband of the 7th cousin 59 times removed |
| King of Rome, Romulus | | 76th great-grandfather |
| King of Scotland, Malcolm III Caennmor | Abt. 1031 | Husband of the half 5th cousin 27 times removed |
| King of Seistan, Vasudeva | | 53rd great-grandfather |
| King of Seville, Abu Amr Abbad ben Muhammad II | | 29th great-grandfather |
| King of Seville, Abul-Kasim Muhammad III | Abt. 1045 | 28th great-grandfather |
| King of Seville, Kadi Abul-Kasim Muhammad I | | 30th great-grandfather |
| King of Sicamber, Antenor I | | 83rd great-grandfather |
| King of Sicamber, Antenor II | | 74th great-grandfather |
| King of Sicamber, Antharius | | 70th great-grandfather |
| King of Sicamber, Basanus | | 79th great-grandfather |
| King of Sicamber, Cassander | | 71st great-grandfather |
| King of Sicamber, Chlodimir I | | 78th great-grandfather |
| King of Sicamber, Chlodomir II | | 73rd great-grandfather |
| King of Sicamber, Clodius | | 75th great-grandfather |
| King of Sicamber, Diocles | | 80th great-grandfather |
| King of Sicamber, Helenus I | | 81st great-grandfather |
| King of Sicamber, Helenus II | | 79th great-granduncle |
| King of Sicamber, Marcomir | | 76th great-grandfather |
| King of Sicamber, Merodachus | | 72nd great-grandfather |
| King of Sicamber, Nicanor | | 77th great-grandfather |
| King of Sicamber, Priamus | | 82nd great-grandfather |
| King of Sindhu, Antialcidas III | | 3rd cousin 63 times removed |
| King of Sindhu, Apollodotos II | | 64th great-granduncle |
| King of Sindhu, Apollodotus I Philopater | | 64th great-granduncle |
| King of Sindhu, Euthydemus | | 2nd cousin 64 times removed |
| King of Soissons, Chilperic I | 539 | 42nd great-grandfather |
| King of Sophene, Tigranes I | | 65th great-granduncle |
| King of Sophene, Zariadres I | | 69th great-grandfather |
| King of Sparta, Agasicles | | Half 17th cousin 71 times removed |
| King of Sparta, Agesilaus I | | Half 9th cousin 79 times removed |
| King of Sparta, Agesilaus II | | Half 21st cousin 67 times removed |
| King of Sparta, Agis I | | Half 5th cousin 83 times removed |
| King of Sparta, Agis II | | Half 21st cousin 67 times removed |
| King of Sparta, Agis III | | Half 23rd cousin 65 times removed |
| King of Sparta, Agis IV | | Half 26th cousin 62 times removed |
| King of Sparta, Alcamenes | | Half 12th cousin 76 times removed |
| King of Sparta, Anaxander | | Half 15th cousin 73 times removed |
| King of Sparta, Anaxandridas I | | Half 12th cousin 76 times removed |
| King of Sparta, Anaxandridas II | | Half 18th cousin 70 times removed |
| King of Sparta, Anaxilaus | | Half 14th cousin 74 times removed |
| King of Sparta, Archelaus | | Half 10th cousin 78 times removed |
| King of Sparta, Archidamus I | | Half 13th cousin 75 times removed |
| King of Sparta, Archidamus II | | Half 21st cousin 67 times removed |
| King of Sparta, Archidamus III | | Half 22nd cousin 66 times removed |
| King of Sparta, Archidamus IV | | Half 24th cousin 64 times removed |
