| Name | Role | Place | Source | |
|---|---|---|---|---|
| Mathijs Sijs | Father | 1723 | Amsterdam | Church records baptisms |
| Mathijs Sijs | Father | 1718 | Amsterdam | Church records baptisms |
| Mathijs Sijs | Registered | 1727 | Amsterdam | Notarial records |
| Mathijs Sijs | Father | 1718 | Amsterdam | Church records baptisms |
| Mathijs Sijs | Groom | 1690 | Amsterdam | Register of notices of marriage |
| Mathijs Sijs | Father | 1723 | Amsterdam | Church records baptisms |
| Mathijs Sijs Hordesrij | Witness | 1728 | Amsterdam | Church records baptisms |
| Mathijs Sijs Hordesrij | Witness | 1728 | Amsterdam | Church records baptisms |
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