| Ancestry Chart: | 
 - Pedigree Tree 
 Descendancy Chart
 Ancestry Chart
 Compact Chart
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 Family with spouse
 Jantina Naaijer
 - Harm Koopman  (I10033) Birth 14 May 1892 -- Gieten, Aa en Hunze, Drenthe, Netherlands (I10033) Birth 14 May 1892 -- Gieten, Aa en Hunze, Drenthe, Netherlands
 Death 20 April 1950 (Age 57) -- Groningen, Groningen, Groningen, Netherlands
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