| Father | Willem Wolfert Gerritse Couwenhoven (1636 - 1728) |
| Mother | Jannetje Pieterse Monfoort (1646 - 1723) |
| Sibling | Neeltje Couwenhoven (1667 - ) |
| Sibling | Peter Couwenhoven (1671 - ) |
| Sibling | Cornelius Willemse Couwenhoven (1672 - 1736) |
| Sibling | Sarah Willemse Couwenhoven (1674 - 1761) |
| Sibling | Albert Williamse Couwenhoven (1676 - 1748) |
| Sibling | Jacob Willemse Couwenhoven (1679 - ) |
| Sibling | Jan Willemse "John" Couwenhoven (1681 - ) |
| Sibling | Annetje Couwenhoven (1683 - ) |
| Sibling | William Willense Couwenhoven (1686 - 1769) |
| Sibling | Jacomma Couwenhoven (1689 - ) |