| Name | Role | Place | Source | |
|---|---|---|---|---|
| Arthur Karel Jan Gebhardt | Registered | 's-Gravenhage | Studbooks | |
| Jan Gebhardt | Registered | 1783 | Amsterdam | Notarial records |
| Jan Hendrick Gebhardt | Groom | 1714 | Amsterdam | Register of notices of marriage |
| Jan Kaspar Gebhardt | Registered | 1817 | Hoorn | Member register |
| Jan Kaspar Gebhardt | Registered | 1817 | Hoorn | Member register |
Find your ancestors and publish your family tree on Genealogy Online via https://www.genealogieonline.nl/en/