1849 - 1913 (64 years)
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- 1 Jan Tonnis Oldenburger [1] b. Fri 09 Feb 1849 d. Mon 05 May 1913
- Willemtje Pater b. Tue 10 Dec 1850 d. Wed 11 Mar 1931
- 2 Anna Oldenburger [1.1] b. Mon 18 Mar 1872 d. Yes, date unknown
- 2 Willemtje Oldenburger [1.2] b. Fri 05 Dec 1873 d. Yes, date unknown
- 2 Aaltje Oldenburger [1.3] b. Mon 20 Sep 1875 d. Wed 02 Oct 1901
- 2 Tammo Oldenburger [1.4] b. Mon 29 Jul 1878 d. Yes, date unknown
- 2 Fennechiena Jantina Oldenburger [1.5] b. Wed 05 May 1880 d. Mon 03 May 1971
- Helenius Ridderbos b. Sun 21 Oct 1877 d. Sun 16 Jul 1950
- 3 Willemtje Aaltje Ridderbos [1.5.1] b. Tue 26 Feb 1907 d. Fri 28 Jan 2005
- Boelo Gankema b. Sat 06 May 1905 d. Sun 07 Apr 1974
- 4 Tamme Helenius Gankema [1.5.1.1] b. Thu 10 Sep 1931 d. Fri 09 Aug 2002
- Alida K. Watermulder b. Yes, date unknown d. Yes, date unknown
- 5 Living [1.5.1.1.1]
- Roelof b. Yes, date unknown d. Yes, date unknown
- 6 Daniëlle [1.5.1.1.1.1] b. Yes, date unknown d. Yes, date unknown
- 5 Living [1.5.1.1.2]
- Angelique b. Yes, date unknown d. Yes, date unknown
- 6 Mariska Gankema [1.5.1.1.2.1] b. Yes, date unknown d. Yes, date unknown
- 6 Marijn Gankema [1.5.1.1.2.2] b. Yes, date unknown d. Yes, date unknown
- 6 Manon Gankema [1.5.1.1.2.3] b. Yes, date unknown d. Yes, date unknown
- 6 Mathijs Gankema [1.5.1.1.2.4] b. Yes, date unknown d. Yes, date unknown
- 2 Harko Harmannus Oldenburger [1.6] b. Wed 21 Mar 1883 d. Tue 19 Oct 1971
- 2 Tonnis Oldenburger [1.7] b. Sat 11 Apr 1885 d. Fri 19 Mar 1971