Klaas Baan was born 2 March 1760 in Hoogkarspel, North Holland, Netherlands to Gijsbert Baan (1733-1796) and Marijtje Koster (1738-1786) and died 27 March 1823 Hoogkarspel, North Holland, Netherlands of unspecified causes. He married Grietje Rol (1764-1828) 28 January 1787 in Andijk, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Marijtje Baan (1789-1840) | |||
| Jacob Baan (1792-1879) | |||
| Dirk Baan (1800-1873) | 15 May 1800 Hoogkarspel, North Holland, Netherlands | 12 March 1873 Hoogkarspel, North Holland, Netherlands | Jantje Visser (1801-1828) Trijntje Wijdenes (1801-1832) Grietje Houter (1808-1890) |
Siblings
| Name | Birth | Death | Joined with |
| Neeltje Baan (1758-1832) | |||
| Klaas Baan (1760-1823) | 2 March 1760 Hoogkarspel, North Holland, Netherlands | 27 March 1823 Hoogkarspel, North Holland, Netherlands | Grietje Rol (1764-1828) |
| Floris Baan (1762-1762) | |||
| Meinoutje Baan (1763-1826) | 18 September 1763 Hoogkarspel, North Holland, Netherlands | 26 December 1826 Berkhout, North Holland, Netherlands | Reijer Gorter (1743-1788) Tijmon Houter (1763-1810) |
| Floris Baan (1765-1831) | |||
| Cornelis Baan (1770-1843) | |||