| Father | Christopher Aleffs (1669 - 1740) |
| Mother | Evsa (Eische) Mehmken (1675 - 1747) |
| Sibling | Grete Aleffs (1696 - 1696) |
| Sibling | Margaretha Catharina Aleffs (1699 - ) |
| Sibling | Folke Marie Aleffs (1701 - ) |
| Sibling | Alef (Adolf) Christophers (1703 - 1762) |
| Sibling | Rebecca Aleffs (1704 - ) |
| Sibling | Hille Aleffs (1706 - 1733) |
| Sibling | Bentert Bernhard Aleffs (1707 - 1777) |
| Sibling | Christopher Aleffs (1708 - 1748) |
| Sibling | Catharina Sophia Aleffs (1710 - ) |
| Sibling | Hinrich Kempen Aleffs (1712 - ) |
| Sibling | Berend Christophers (1716 - 1783) |