| Name | Role | Place | Source | |
|---|---|---|---|---|
| Alida Ouwersloot | Mother of groom | 1817 | Katwijk | Civil registration marriages |
| Alida Ouwersloot | Mother of groom | 1817 | Katwijk, Katwijk | |
| Jacoba Alida Ouwersloot | Registered | 1945 | Amsterdam | Police reports |
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