Jacob Groot was born 7 December 1750 in Opmeer, North Holland, Netherlands to Adriaan Groot (1709-1764) and Antje Hofland (1716-1768) and died 11 February 1829 Spanbroek, North Holland, Netherlands of unspecified causes. He married Neeltje Commandeur (-1800) 14 January 1776 in Spanbroek, North Holland, Netherlands. He married Dieuwertje Koedooder (-) 7 July 1805 in Spanbroek, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Antje Groot (1777-1827) | |||
| Maartje Groot (1778-1841) | 4 September 1778 Spanbroek, North Holland, Netherlands | 28 April 1841 Westwoud, North Holland, Netherlands | Arien Es (1773-1857) |
| Grietje Groot (1780-1837) | |||
| Arie Groot (1781-) | |||
| Jannetje Groot (1783-1849) | |||
| Trijntje Groot (1785-bef1789) | |||
| Teunis Groot (1787-1853) | |||
| Trijntje Groot (1789-1868) | 23 January 1789 Spanbroek, North Holland, Netherlands | 6 October 1868 Westeinde, Enkhuizen, North Holland, Netherlands | Jacob Schoenmaker (1780-1834) Sjouke de Vries (-) |
| Arien Groot (1791-1868) | |||
| Cornelis Groot (1792-) | |||
| Cornelis Groot (1793-) | |||
| Cornelis Groot (1795-1883) | |||
Siblings
| Name | Birth | Death | Joined with |
| Teunis Ariensz (1738-bef1740) | |||
| Teunis Ariensz (1740-bef1749) | |||
| Cornelis Groot (1742-1789) | 13 December 1742 Opmeer, North Holland, Netherlands | 22 August 1789 Opmeer, North Holland, Netherlands | Stijntje Mulder (1752-1818) |
| Marijtje Groot (1744-1795) | |||
| Teunis Ariensz (1749-) | |||
| Jacob Groot (1750-1829) | 7 December 1750 Opmeer, North Holland, Netherlands | 11 February 1829 Spanbroek, North Holland, Netherlands | Neeltje Commandeur (-1800) Dieuwertje Koedooder (-) |