| Name | Role | Place | Source | |
|---|---|---|---|---|
| Adolf Isidoor Lodewijk Keyen | Witness | 1910 | Laken | Civil registration marriages |
| Adolf Keyen | Witness | 1909 | Geetbets | Civil registration births |
| Adolf Keyen | Witness | 1909 | Geetbets | Civil registration births |
| Adolf Keyen | Witness | 1923 | Geetbets | Civil registration marriages |
| Adolf Keyen | Witness | 1905 | Geetbets | Civil registration marriages |
| Adolf Keyen | Witness | 1906 | Geetbets | Civil registration births |
| Adolf Keyen | Witness | 1905 | Geetbets | Civil registration births |
| Adolf Keyen | Witness | 1909 | Geetbets | Civil registration births |
| Adolf Keyen | Witness | 1915 | Geetbets | Civil registration births |
| Jan Adolf Emiel Keyen | Child | 1900 | Geetbets | Civil registration births |
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