Willem Hansma was born circa 1824 in Vollenhove, Overijssel, Netherlands to Jan Hansman (c1793-1838) and Aaltjen Buitenhuis (c1799-1826) and died 17 March 1907 Vollenhove, Overijssel, Netherlands of unspecified causes. He married Aaltje Winters (c1827-1863) 31 May 1854 in Vollenhove, Overijssel, Netherlands. He married Matje van Dalen (c1833-1876) 21 January 1864 in Vollenhove, Overijssel, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Aaltje Hansma (c1856-1939) | |||
| Aagje Hansma (c1858-1935) | |||
| Jantje Hansma (c1860-1937) | |||
| Hendrik Hansma (c1863-1933) | |||
| Name | Birth | Death | Joined with |
| Jan Hansma (1866-1867) | |||
| Jan Hansma (c1867-1957) | |||
| Albert Hansma (c1869-1933) | |||
| Jentje Hansma (c1871-1948) | |||
Residences