| Name | Role | Place | Source | |
|---|---|---|---|---|
| Martin Gijsbert Keyen | Child | 1807 | Maastricht | Civil registration births |
| Martin Gysbert Adolphe Keyen>Herben | Gewettigd kind | 1846 | Brussel | Civil registration marriages |
| Martin Keyen | Father | 1814 | Maastricht | Civil registration deaths |
| Martin Keyen | Groom | 1804 | Maastricht | Civil registration marriages |
| Martin Keyen | Registered | Vincennes/Parijs | Studbooks | |
| Martin Keyen | Groom | 1808 | Neerijse | Civil registration marriages |
| Martin Keyen | Father | 1804 | Maastricht | Civil registration births |
| Martin Keyen | Father | 1814 | Maastricht | Civil registration births |
| Martin Keyen | Father | 1806 | Maastricht | Civil registration births |
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