Biography
Willem Pietersz van Oegstgeest was born circa 1495 to Pieter Jansz van Oegstgeest (c1430-bef1505) and Katrijn Willemsdr (c1445-c1512) and died 12 June 1552 of unspecified causes. He married Maritgen Jansdochter (c1520-c1563) .
Children
| Name | Birth | Death | Joined with |
| Jan Willemsz Brasser (c1525-) | |||
| Adriaen Willemsz van der Salm (c1544-c1618) | 1544 | 4 April 1618 | Lijsbeth Cornelisdr (c1570-) |
| Grietge Willems Bras (c1545-c1599) | |||
Footnotes (including sources)
| ‡ General |