├─ Trijntje Schipper (Thursday 19 August 1841 Scheemda, Groningen, Nederland - Tuesday 07 August 1900 Westerlee,
       │ Scheemda, Groningen, Nederland)
       │    └─ Pieter Jager (Wednesday 06 February 1884 Westerlee, Scheemda, Groningen, Nederland - Wednesday 16 November 1932
       │     Groningen, Groningen, Nederland)
=>
       │     +
Anna Tonkes (Thursday 18 December 1884 Noordbroek, Groningen, Nederland - Thursday 14 September 1961 Groningen,
       │     Groningen, Nederland)(. Thursday 30 November 1905 Noordbroek, Groningen, Nederland)
       │ Thomas Drenth (Sunday 22 August 1841 Westerlee, Scheemda, Groningen, Nederland - Wednesday 16 October 1912 Meeden,
       │ Groningen, Nederland)(. Saturday 15 June 1867 Scheemda, Groningen, Nederland)
       │    ├─ Geessien Drent (Thursday 23 May 1867 Scheemda, Groningen, Nederland - Friday 05 November 1897 Meeden, Groningen,
       │    │ Nederland)
=>
       │    │ +
Jan Doddema (Tuesday 21 April 1868 Meeden, Groningen, Nederland - Wednesday 06 July 1949 Zuidbroek, Groningen,
       │    │ Nederland)(. Saturday 24 May 1890 Meeden, Groningen, Nederland)
       │    ├─ Leendert Drenth (Sunday 03 October 1869 Beneden Veensloot, Meeden, Groningen, Nederland - Wednesday 28 February
       │    │ 1940 Emmen, Drenthe, Nederland)
=>
       │    │ +
Harmina de Boer (Tuesday 28 November 1871 Nieuwe Pekela, Groningen, Nederland - Tuesday 07 February 1905 Scheemda,
       │    │ : Groningen, Nederland)(. Thursday 11 February 1892 Scheemda, Groningen, Nederland)
       │    │ +
Roelfien Ridderbos (Tuesday 01 April 1862 Oude Pekela, Groningen, Nederland - Sunday 08 June 1947 Veendam,
       │    │ Groningen, Nederland)(. Saturday 27 October 1906 Oude Pekela, Groningen, Nederland)
       │    ├─ Antje Drenth (Thursday 08 August 1872 Westerlee, Scheemda, Groningen, Nederland - Wednesday 06 July 1949
       │    │ Zuidbroek, Groningen, Nederland)
=>
       │    │ +
Harm Ottenga (Meeden, Groningen, Nederland;Monday 22 June 1868 - Thursday 23 May 1895)
       │    │ : (. Saturday 04 February 1893 Meeden, Groningen, Nederland)
       │    │ +
Jan Doddema (Tuesday 21 April 1868 Meeden, Groningen, Nederland - Wednesday 06 July 1949 Zuidbroek, Groningen,
       │    │ Nederland)(. Saturday 10 March 1900 Meeden, Groningen, Nederland)
       │    ├─ Trientje Drenth (Friday 20 November 1874 Westerlee, Scheemda, Groningen, Nederland - Thursday 10 October 1929
       │    │ Borger, Drenthe, Nederland)
=>
       │    │ +
Jan de Wal (Tuesday 04 January 1870 Boven Veensloot, Meeden, Groningen, Nederland - Saturday 28 October 1944
       │    │ Stadskanaal, Groningen, Nederland)(. Saturday 28 October 1893 Meeden, Groningen, Nederland)
       │    └─ Kornelius Drenth (Tuesday 31 July 1877 Westerlee, Scheemda, Groningen, Nederland - Tuesday 30 July 1878
       │     Duurkenakker, Muntendam, Groningen, Nederland)
       │ +
Hemmechien Venema (Approximately 1849 Zuidbroek, Groningen, Nederland - Tuesday 31 May 1938 Scheemda, Groningen,
       │ Nederland)(. Saturday 11 February 1871 Meeden, Groningen, Nederland)
        Jan Doedens (Scheemda, Groningen, Nederland;Sunday 26 July 1857 - Monday 01 March 1926)
        (. Thursday 30 May 1878 Scheemda, Groningen, Nederland)
           ├─ Jantje Doedens (Monday 07 April 1879 Westerlee, Scheemda, Groningen, Nederland - Date unknown)
=>
           │ +
Berend Zuiderveen (Thursday 18 January 1877 Beneden Veensloot, Meeden, Groningen, Nederland - Date unknown)
           │ (. Thursday 19 July 1900 Scheemda, Groningen, Nederland)
           ├─ Kornelius Doedens (Tuesday 14 September 1880 Westerlee, Scheemda, Groningen, Nederland - Date unknown)
=>
           │ +
Anneke Molanus (Saturday 31 May 1879 Heiligerlee, Scheemda, Groningen, Nederland - Wednesday 14 February 1940
           │ Scheemda, Groningen, Nederland)(. Thursday 02 January 1902 Scheemda, Groningen, Nederland)
           ├─ Beno Doedens (Westerlee, Scheemda, Groningen, Nederland;Sunday 12 November 1882 - Tuesday 28 October 1902)
           ├─ Geessien Doedens (Tuesday 04 October 1887 Westerlee, Scheemda, Groningen, Nederland - Date unknown)
=>
           │ +
Harm Alting (Saturday 24 March 1883 Solwerd, Appingedam, Groningen, Nederland - Friday 16 September 1960 Groningen,
           │ Groningen, Nederland)(. Sunday 22 May 1910 Groningen, Groningen, Nederland)
           ├─ NN Doedens (Westerlee, Scheemda, Groningen, Nederland;Sunday 31 January 1892 - Sunday 31 January 1892)
           ├─ Grietje Doedens (Thursday 09 November 1893 Westerlee, Scheemda, Groningen, Nederland - Date unknown)
=>
           │ +
Christiaan Harms (Wednesday 15 March 1893 Winschoten, Groningen, Nederland - Date unknown)
           │ (. Thursday 08 March 1917 Scheemda, Groningen, Nederland)
           ├─ Trijntje Doedens (Thursday 06 May 1897 Westerlee, Scheemda, Groningen, Nederland - Date unknown)
           │ +
Feiko Bernardus Zinkhann (Thursday 12 July 1894 Groningen, Groningen, Nederland - Date unknown)
           │ (. Thursday 31 January 1918 Groningen, Groningen, Nederland)
           ├─ Gerhardus Doedens (Thursday 15 November 1900 Westerlee, Scheemda, Groningen, Nederland - Date unknown)
           │ +
Antje Kappen (Saturday 12 April 1902 Oosterdiep, Veendam, Groningen, Nederland - Date unknown)
           │ (. Saturday 05 November 1927 Veendam, Groningen, Nederland)
           └─ NN Doedens (Scheemda, Groningen, Nederland;Thursday 17 December 1903 - Thursday 17 December 1903)