Baron Coenraad Jacob Sixma van Heemstra
1834 - 1868 (33 years)(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 Baron Coenraad Jacob Sixma van Heemstra [1] b. 17 Nov 1834 d. 10 May 1868
- Johanna Sophie Christiane Tappen b. 18 Mar 1833 d. 15 Aug 1908
- 2 Baron Daniël Adrian Hector Willem Sixma van Heemstra [1.1] b. 30 Dec 1864 d. 18 Jan 1955
- Martha Margarethe Lehman b. 8 Feb 1863 d. 16 Oct 1904
- 3 Barones Margarethe Sixma van Heemstra [1.1.1] b. 7 Aug 1894 d. 16 Oct 1904
- 3 Baron Daniël Adrian August Wilhelm Sixma van Heemstra [1.1.2] b. 27 Dec 1898 d. 23 Jul 1916
- 3 Barones Martha Maria Mathilda Ada Sixma van Heemstra [1.1.3] b. 21 Dec 1899 d. 15 Feb 1920
- 3 Baron Hans Wilhelm Hermann Wasserfall Sixma van Heemstra [1.1.4] b. 29 Dec 1903 d. 5 May 1986
- 3 Barones Margarethe Sixma van Heemstra [1.1.1]
- 2 Baron Daniël Adrian Hector Willem Sixma van Heemstra [1.1]