| Descendancy Chart: | 
 - Harmannus Jan van Oosterom  (I11176) Birth 24 November 1881 -- Vlagtwedde, Vlagtwedde, Groningen, Netherlands (I11176) Birth 24 November 1881 -- Vlagtwedde, Vlagtwedde, Groningen, Netherlands
 Death 30 June 1963 (Age 81) -- Zoutkamp, Ulrum, Groningen, Netherlands
 
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  Marriage  14 May 1902   -- Ulrum, De Marne, Groningen, Netherlands Marriage  14 May 1902   -- Ulrum, De Marne, Groningen, Netherlands
 - Abelina Buitjes  (I11175) Birth 19 December 1888 -- Zoutkamp, Ulrum, Groningen, Netherlands (I11175) Birth 19 December 1888 -- Zoutkamp, Ulrum, Groningen, Netherlands
 Death 2 February 1967 (Age 78)
  
 - Number of Children: 6 
 - Elizabeth van Oosterom  (I25563) Birth 8 September 1902 -- Zoutkamp, Ulrum, Groningen, Netherlands (I25563) Birth 8 September 1902 -- Zoutkamp, Ulrum, Groningen, Netherlands
 Death 9 December 1928 (Age 26) -- Zoutkamp, Ulrum, Groningen, Netherlands
  
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 Evert Visser
 - Foktje van Oosterom  (I25558) Birth 16 March 1905 -- Zoutkamp, Ulrum, Groningen, Netherlands (I25558) Birth 16 March 1905 -- Zoutkamp, Ulrum, Groningen, Netherlands
  
 1 . 2
  Marriage  30 January 1930   -- Ulrum, De Marne, Groningen, Netherlands Marriage  30 January 1930   -- Ulrum, De Marne, Groningen, Netherlands
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 Foktje van Oosterom
 - Evert Visser  (I25564) Birth 17 August 1903 -- Delfzijl, Delfzijl, Groningen, Netherlands (I25564) Birth 17 August 1903 -- Delfzijl, Delfzijl, Groningen, Netherlands
  
 - Unknown children 
 
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 Eilke Ekema
 - Engelina Jantina van Oosterom  (I25559) Birth 13 April 1907 -- Zoutkamp, Ulrum, Groningen, Netherlands (I25559) Birth 13 April 1907 -- Zoutkamp, Ulrum, Groningen, Netherlands
 Death 10 February 1993 (Age 85) -- Zoutkamp, Ulrum, Groningen, Netherlands
  
 1 . 3
  Marriage  1 September 1932   -- Ulrum, De Marne, Groningen, Netherlands Marriage  1 September 1932   -- Ulrum, De Marne, Groningen, Netherlands
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 Engelina Jantina van Oosterom
 - Eilke Ekema  (I25565) Birth 7 January 1900 -- Warffum, Eemsmond, Groningen, Netherlands (I25565) Birth 7 January 1900 -- Warffum, Eemsmond, Groningen, Netherlands
 Death 1 June 1975 (Age 75)
 
 - Unknown children 
 
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 Christine Gebine Louise Weber
 - Jacob van Oosterom  (I25560) Birth 22 December 1908 -- Zoutkamp, Ulrum, Groningen, Netherlands (I25560) Birth 22 December 1908 -- Zoutkamp, Ulrum, Groningen, Netherlands
 Death 21 June 1992 (Age 83) -- Emmen, Emmen, Drenthe, Netherlands
  
 1 . 4
  Marriage  30 May 1938   -- Ulrum, De Marne, Groningen, Netherlands Marriage  30 May 1938   -- Ulrum, De Marne, Groningen, Netherlands
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 Jacob van Oosterom
 - Christine Gebine Louise Weber  (I25567) Birth 9 May 1912 -- Ulrum, De Marne, Groningen, Netherlands (I25567) Birth 9 May 1912 -- Ulrum, De Marne, Groningen, Netherlands
 Death 26 October 1993 (Age 81) -- Emmen, Emmen, Drenthe, Netherlands
 
 - Unknown children 
 
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 Sjouktje Woltha
 - Engelhardus Jan van Oosterom  (I25561) Birth 9 June 1910 -- Zoutkamo, Ulrum, Groningen, Netherlands (I25561) Birth 9 June 1910 -- Zoutkamo, Ulrum, Groningen, Netherlands
 Death 2 March 1962 (Age 51) -- Groningen, Groningen, Groningen, Netherlands
  
 1 . 5
  Marriage  27 May 1938   -- Ulrum, De Marne, Groningen, Netherlands Marriage  27 May 1938   -- Ulrum, De Marne, Groningen, Netherlands
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 Engelhardus Jan van Oosterom
 - Sjouktje Woltha  (I25566) Birth 2 September 1909 -- Vierhuizen, Ulrum, Groningen, Netherlands (I25566) Birth 2 September 1909 -- Vierhuizen, Ulrum, Groningen, Netherlands
 
 - Unknown children 
 
 - Geertruida Frouwina van Oosterom  (I25562) Birth 25 May 1919 -- Zoutkamp, Ulrum, Groningen, Netherlands (I25562) Birth 25 May 1919 -- Zoutkamp, Ulrum, Groningen, Netherlands
 Death 7 June 1919 (Age 13 days) -- Zoutkamp, Ulrum, Groningen, Netherlands
  
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