Jan Cornelisz Koop was born 27 December 1769 in Onderdijk, North Holland, Netherlands to Cornelis Koop (1733-1811) and Trijn Sijmens (1731-1791) and died 21 March 1852 Onderdijk, North Holland, Netherlands of unspecified causes. He married Lijsbeth Schoenmaker (1769-1829) 31 January 1796 in Wervershoof, North Holland, Netherlands. He married Antje Mulder (1773-1857) 4 May 1832 in Zwaag, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Jacob Koop (1797-1797) | |||
| Trijntje Koop (1799-) | |||
| Marijtje Koop (1801-) | |||
| Jacob Koop (1803-) | |||
| Cornelis Koop (1804-1806) | |||
| Cornelis Koop (1807-bef1812) | |||
| Cornelis Koop (1812-1870) | |||
Siblings
| Name | Birth | Death | Joined with |
| Lijsbeth Koop (1754-) | |||
| Jacobus Koop (1756-1772) | |||
| Klaas Koop (1758-1832) | 1 February 1758 Onderdijk, North Holland, Netherlands | 15 April 1832 Onderdijk, North Holland, Netherlands | Marijtje Hessen (c1763-1797) Femmetje Jans (c1754-1832) |
| Maartje Koop (1760-1834) | |||
| Catharina Koop (1763-1820) | |||
| Antje Koop (1766-1831) | 28 June 1766 Onderdijk, North Holland, Netherlands | 15 November 1831 Lutjebroek, North Holland, Netherlands | Freek Potter (1765-1816) Jan van der Jagt (1770-1834) |
| Ariaantje Koop (1768-1768) | |||
| Jan Koop (1769-1852) | 27 December 1769 Onderdijk, North Holland, Netherlands | 21 March 1852 Onderdijk, North Holland, Netherlands | Lijsbeth Schoenmaker (1769-1829) Antje Mulder (1773-1857) |
| Adriaantje Koop (1772-1856) | |||
| Aafje Koop (1776-1831) | |||
Residences
Footnotes (including sources)
| ‡ General |
| ₪ Wedding |
| ¶ Death |