Thomas de Graaf was born circa 1762 in Haarlem, North Holland, Netherlands to Willem de Graaf (1727-) and Swaantje/Susanna Tengers and died 27 December 1812 Haarlem, North Holland, Netherlands of unspecified causes. He married Catharina Terpoorten (1763-1829) in Haarlem, North Holland, Netherlands.
Ring frame twister
Children
| Name | Birth | Death | Joined with |
| Helena Francisca de Graaf (1798-1847) | 1798 Haarlem, North Holland, Netherlands | 27 September 1847 Haarlem, North Holland, Netherlands | Adrianus Hollee (1802-1856) |
| Wilhelmus de Graaf (1807-) | |||