Jan Bergwerf was born 1692 in Vlaardingen, South Holland, Netherlands to Pieter Bergwerf (1660-1742) and Teuntje van der Velde (1669-) and died 7 July 1749 South Holland, Netherlands of unspecified causes. He married Trijntje van Velden 7 May 1719 in Rozenburg, South Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Teuntje Bergwerf (1719-) | |||
| Jan Bergwerf (1721-) | |||
| Teuntje Bergwerf (1722-) | |||
| Pieter Bergwerf (1724-) | 1724 Rozenburg, South Holland, Netherlands | Netherlands | Trijntje Borsje |
| Arij Bergwerf (1725-) | |||
| Marijtje Bergwerf (1725-) | |||
| Jacob Bergwerf (1728-) | |||
| Leendert Bergwerf (1731-) | |||
Residences