| Father | Aert Anthonisse de Focquert (1659 - ) |
| Mother | Ariaantje Dirckse Hoogerwerf (1660 - ) |
| Sibling | Leendert Aarts de Fockert (1705 - 1772) |
| Sibling | Adrianus de Fockert ( - ) |
| Sibling | Leendert de Fockert ( - 1702) |
| Sibling | Marieke Aarts de Fockert (1694 - ) |
| Sibling | Marieken Aarts de Fockert ( - ) |
| Sibling | Leendert ( Twin) de Fockert ( - 1705) |
| Sibling | Jacobus Aarts de Fockert ( - 1692) |
| Sibling | Hendrina de Fockert (1688 - ) |
| Sibling | Derk de Fokkert (1686 - ) |
| Sibling | Peter Aarts de Fockert ( - ) |
| Sibling | Jenntje de Foquert ( - ) |
| Sibling | Marijke Aarts de Fockert ( - ) |
| Sibling | Teuntje de Fockert (1684 - ) |
| Sibling | Anthonie de Fockert ( - ) |