| Descendancy Chart: | 
 - Pedigree Tree 
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 Family with spouse
 Niessien op de Dijk
 Maria Blaauw
 Pieter Blaauw
 Leentje Blaauw
 Jan Blaauw- Harm Blaauw  (I19886) Birth 10 February 1885 -- Windeweer, Hoogezand-Sappemeer, Groningen, Netherlands (I19886) Birth 10 February 1885 -- Windeweer, Hoogezand-Sappemeer, Groningen, Netherlands
 
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  Marriage  2 November 1907   -- Veendam, Veendam, Groningen, Netherlands Marriage  2 November 1907   -- Veendam, Veendam, Groningen, Netherlands
 - Pedigree Tree 
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 Family with spouse
 Harm Blaauw
 Maria Blaauw
 Pieter Blaauw
 Leentje Blaauw
 Jan Blaauw- Niessien op de Dijk  (I19885) Birth 25 June 1884 -- Veendam, Veendam, Groningen, Netherlands (I19885) Birth 25 June 1884 -- Veendam, Veendam, Groningen, Netherlands
  
 - Number of Children: 4 
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 Family with spouse
 Harm Smid
 - Maria Blaauw  (I23840) Birth 5 March 1908 -- Ommelanderwijk, Veendam, Groningen, Netherlands (I23840) Birth 5 March 1908 -- Ommelanderwijk, Veendam, Groningen, Netherlands
 Death 28 July 1972 (Age 64)
  
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  Marriage  22 April 1933   -- Veendam, Veendam, Groningen, Netherlands Marriage  22 April 1933   -- Veendam, Veendam, Groningen, Netherlands
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 Family with spouse
 Maria Blaauw
 - Harm Smid  (I23845) Birth 4 January 1909 -- Valthermond, Borger-Odoorn, Drenthe, Netherlands (I23845) Birth 4 January 1909 -- Valthermond, Borger-Odoorn, Drenthe, Netherlands
 Death 27 September 1990 (Age 81)
 
 - Unknown children 
 
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 Metje Wolgen
 - Pieter Blaauw  (I23841) Birth 22 April 1909 -- Zuidwending, Veendam, Groningen, Netherlands (I23841) Birth 22 April 1909 -- Zuidwending, Veendam, Groningen, Netherlands
 Death 14 April 1998 (Age 88) -- Netherlands
  
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  Marriage  10 June 1937   -- Veendam, Veendam, Groningen, Netherlands Marriage  10 June 1937   -- Veendam, Veendam, Groningen, Netherlands
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 Family with spouse
 Pieter Blaauw
 - Metje Wolgen  (I23846) Birth 10 March 1912 -- Stadskanaal, Onstwedde, Groningen, Netherlands (I23846) Birth 10 March 1912 -- Stadskanaal, Onstwedde, Groningen, Netherlands
 Death 8 September 2000 (Age 88) -- Netherlands
 
 - Unknown children 
 
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 Family with spouse
 Harm Bos
 - Leentje Blaauw  (I23842) Birth 17 August 1910 -- Zuidwending, Veendam, Groningen, Netherlands (I23842) Birth 17 August 1910 -- Zuidwending, Veendam, Groningen, Netherlands
 Death 2 March 1991 (Age 80)
  
 1 . 3
  Marriage  21 May 1932   -- Veendam, Veendam, Groningen, Netherlands Marriage  21 May 1932   -- Veendam, Veendam, Groningen, Netherlands
 - Pedigree Tree 
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 Family with spouse
 Leentje Blaauw
 - Harm Bos  (I23844) Birth 31 October 1910 -- Nieuwe Pekela, Pekela, Groningen, Netherlands (I23844) Birth 31 October 1910 -- Nieuwe Pekela, Pekela, Groningen, Netherlands
 Death 28 June 1985 (Age 74)
 
 - Unknown children 
 
 - Jan Blaauw  (I23843) Birth 19 June 1912 -- Ommelanderwijk, Veendam, Groningen, Netherlands (I23843) Birth 19 June 1912 -- Ommelanderwijk, Veendam, Groningen, Netherlands
 Death 27 June 1917 (Age 5) -- Veendam, Veendam, Groningen, Netherlands
  
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