1. | Baron Daniël Adrian Hector Willem Sixma van Heemstra was born on 30 Dec 1864; died on 18 Jan 1955. Daniël married Martha Margarethe Lehman on 20 Oct 1893. Martha was born on 8 Feb 1863; died on 16 Oct 1904. [Group Sheet] [Family Chart]
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2. | Barones Margarethe Sixma van Heemstra (1.Daniël1) was born on 7 Aug 1894; died on 16 Oct 1904. |
3. | Baron Daniël Adrian August Wilhelm Sixma van Heemstra (1.Daniël1) was born on 27 Dec 1898; died on 23 Jul 1916. |
4. | Barones Martha Maria Mathilda Ada Sixma van Heemstra (1.Daniël1) was born on 21 Dec 1899; died on 15 Feb 1920. |
5. | Baron Hans Wilhelm Hermann Wasserfall Sixma van Heemstra (1.Daniël1) was born on 29 Dec 1903; died on 5 May 1986. |