| Father | Fredrick WILLEMSZEN (1688 - 1731) |
| Mother | Marytje WALDRON (1686 - ) |
| Sibling | Jan WILLEMSZEN (1708 - ) |
| Sibling | Daniel WILLEMSZEN (1709 - 1719) |
| Sibling | Fredrik WILLEMSZEN (1712 - 1719) |
| Sibling | Sara WILLEMSZEN (1713 - ) |
| Sibling | Elizabeth WILLEMSZEN (1715 - 1716) |
| Sibling | Elizabeth WILLEMSZEN (1716 - ) |
| Sibling | Marytje WILLEMSZEN (1718 - ) |
| Sibling | Daniel WILLEMSZEN (1719 - 1722) |
| Sibling | Fredrik WILLEMSZEN (1719 - 1721) |
| Sibling | Frederick WILLEMSZEN (1721 - 1731) |
| Sibling | Daniel WILLEMSZEN (1722 - ) |
| Sibling | Joseph WILLEMSZEN (1724 - ) |
| Sibling | Isaac WILLEMSZEN (1726 - 1727) |
| Sibling | Annatje WILLEMSZEN (1729 - ) |