Geertruida Wilhelmina Twiss
1818 - 1853 (35 years)
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- 1 Geertruida Wilhelmina Twiss [1] b. 13 May 1818 d. 24 Oct 1853
- Robert Alexander Jackson b. 7 Apr 1812 d. 15 Feb 1901
- 2 John Jackson [1.1] b. 3 Aug 1847 d. 23 Nov 1857
- 2 Francis Jackson [1.2] b. 24 Oct 1848 d. 9 Oct 1954
- 2 Willem Jackson [1.3] b. 29 Apr 1850 d. 28 Jan 1890
- 2 Robert Alexander Jackson [1.4] b. 27 Oct 1852 d. 8 Oct 1911
- + Henriette Jacqueline Ampt b. 13 Mar 1868 d. 2 Nov 1948
- + Henriette Jacqueline Ampt b. 13 Mar 1868 d. 2 Nov 1948
- 2 John Jackson [1.1]