Klaas Jacobz Buis was born 28 January 1824 in Onderdijk, Netherlands to Jacob Buis (1782-1865) and Trijntje Ligthart (1783-1857) and died 20 July 1895 Wervershoof, Netherlands of unspecified causes. He married Trijntje Pennekamp (1822-1909) .
Children
| Name | Birth | Death | Joined with |
| Jacob Buis (1850-1930) | 11 March 1850 Lagedijk, Wervershoof, North Holland, Netherlands | 9 December 1930 Medemblik, North Holland, Netherlands | Alida Hoek (1854-1939) |
| Antje Buis (1851-1936) | |||
| Cornelis Buis (1853-1940) | |||
| Pieter Buis (1860-1906) | 17 February 1860 Lagedijk, Wervershoof, North Holland, Netherlands | 15 November 1906 Hem, North Holland, Netherlands | Geertje Grooteman (1864-1912) |
| Klaas Buis (1862-) | |||
| Teunis Buis (1864-1897) | 8 July 1864 Lagedijk, Wervershoof, North Holland, Netherlands | 26 November 1897 Wervershoof, North Holland, Netherlands | Geertje Groot (1865-1900) |
| Jan Buis (1866-1935) | 28 August 1866 Wervershoof, North Holland, Netherlands | 12 January 1935 Daijia, China | |
| Simon Buis (1868-1896) | |||