| Father | | Adolf Robertus  (I17706) 
Birth  2 January 1875   -- Winschoten, Winschoten, Groningen, NetherlandsDeath  19 March 1953 (Age 78)   -- Scheemda, Scheemda, Groningen, Netherlands
 
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				| Mother | | Hindriktje Koerts  (I17707) 
Birth  19 September 1884   -- Scheemderzwaag, Scheemda, Groningen, NetherlandsDeath  31 May 1918 (Age 33)   -- Winschoten, Winschoten, Groningen, Netherlands
 
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				|  | | Adolf Robertus  (I17803) 
Birth  20 January 1903   -- Winschoten, Winschoten, Groningen, NetherlandsDeath  15 July 1975 (Age 72)   -- Haarlem, Haarlem, Noord-Holland, Netherlands
 
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				| Brother | | Cornelis Robertus  (I17812) 
Birth  15 January 1904   -- Winschoten, Winschoten, Groningen, NetherlandsDeath  1 March 1988 (Age 84)   -- Delfzijl, Delfzijl, Groningen, Netherlands
 
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				| Brother | | Jurjen Robertus  (I17825) 
Birth  23 December 1904   -- Winschoten, Winschoten, Groningen, NetherlandsDeath  26 May 1988 (Age 83)   -- Bennekom, Ede, Gelderland, Netherlands
 
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				| Brother | | Jan Lucas Robertus  (I17834) 
Birth  9 November 1909   -- Winschoten, Winschoten, Groningen, NetherlandsDeath  24 August 1991 (Age 81)   -- Scheemda, Scheemda, Groningen, Netherlands
 
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