| Male Baron Coenraad Jacob Sixma van Heemstra |
| Birth | 17 Nov 1834 | Pietersbierum |
| Death | 10 May 1868 | Detmold, Duitsland |
| Burial | ||
| Marriage | 4 Oct 1862 | |
| Father | Baron Age Tjepke Ruurd van Heemstra | F3719 Group Sheet | |
| Mother | Anna Adriana Cornelia van Halteren | F3719 Group Sheet | |
| Female Johanna Sophie Christiane Tappen |
| Birth | 18 Mar 1833 | Minden, Duitsland |
| Death | 15 Aug 1908 | Detmold, Duitsland |
| Burial | ||
| Father | ||
| Mother | ||
| Male + Baron Daniël Adrian Hector Willem Sixma van Heemstra |
| Birth | 30 Dec 1864 | |
| Death | 18 Jan 1955 | |
| Burial | ||
| Spouse | Martha Margarethe Lehman | F3735 | |
| Marriage | 20 Oct 1893 | |