| Father | Willem Lammerts de Roos (1779 - 1852) |
| Mother | Mintje Oepkes Vellinga (1785 - 1842) |
| Sibling | Jan Willems de Roos (1816 - 1902) |
| Sibling | Lammert Willems De Roos ( - 1823) |
| Sibling | Laammert Willems De Roos ( - 1888) |
| Sibling | Elisabeth Willems de Roos (1822 - 1907) |
| Sibling | Tjitze Willems de Roos (1819 - 1898) |
| Sibling | Johannes De Roos (1812 - 1891) |
| Sibling | Taekje Willems De Roos (1805 - 1903) |
| Sibling | Tjitske Willems de Roos (1828 - 1908) |
| Sibling | Oepke Willems de Roos (1807 - 1842) |
| Sibling | Anna Willems de Roos (1814 - 1853) |