| Name | Role | Place | Source | |
|---|---|---|---|---|
| Elijsabeth Sijmo van Delft | Personen | 1621 | Notarial records | |
| Ferdinand Sijmo | Employee | 1749 | Delft | Personnel-administration |
| Jansz Sijmo | Groom | 1697 | Amsterdam | Register of notices of marriage |
| Sijmo | Child | 1790 | Woltersum | Church records baptisms |
| Sijmo | Child | 1661 | Rotterdam | Church records baptisms |
| Sijmo Josevisz Scheemaacker | Child | 1693 | Edam | Church records baptisms |
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