| Sikko Koopman + Johanna Vorenkamp
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	| | Sikko Koopman  (I25873) 
Birth  3 December 1868   -- Groningen, Groningen, Groningen, NetherlandsDeath  29 January 1938 (Age 69)   -- Groningen, Groningen, Groningen, Netherlands
 
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	| | Johanna Vorenkamp  (I25871) 
Birth  17 March 1868   -- Hoogezand, Hoogezand-Sappemeer, Groningen, NetherlandsDeath  12 December 1920 (Age 52)   -- Groningen, Groningen, Groningen, Netherlands
 
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	| | Egbert Vorenkamp  (I04362) 
Birth  18 January 1828   -- Groningen, Grongingen, Groningen, NetherlandsDeath  29 December 1887 (Age 59)   -- Groningen, Groningen, Groningen, Netherlands
 
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	| | Wubbechien Westerveld  (I04363) 
Birth  11 May 1830   -- Groningen, Grongingen, Groningen, NetherlandsDeath  27 June 1923 (Age 93)   -- Zuidlaren, Zuidlaren, Drenthe, Netherlands
 
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