1894-1904
| Barones Margarethe Sixma van Heemstra | |
| B: | 7 Aug 1894 |
| D: | 16 Oct 1904 |
| Baron Daniël Adrian August Wilhelm Sixma van Heemstra | |
| B: | 27 Dec 1898 |
| D: | 23 Jul 1916 |
| Barones Martha Maria Mathilda Ada Sixma van Heemstra | |
| B: | 21 Dec 1899 |
| D: | 15 Feb 1920 |
| Baron Hans Wilhelm Hermann Wasserfall Sixma van Heemstra | |
| B: | 29 Dec 1903 |
| D: | 5 May 1986 |
|
| Baron Daniël Adrian Hector Willem Sixma van Heemstra | |
| B: | 30 Dec 1864 |
| D: | 18 Jan 1955 |
1863-1904
| Martha Margarethe Lehman | |
| B: | 8 Feb 1863 |
| M: | 20 Oct 1893 |
| D: | 16 Oct 1904 |