| Descendancy Chart: | 
 - Pedigree Tree 
 Descendancy Chart
 Ancestry Chart
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 Hourglass Chart
 Family with spouse
 Johanna Mulder
 Roelfien Zielstra- Gerrit Zielstra  (I01546) Birth 1 December 1890 -- Wildervank, Veendam, Groningen, Netherlands (I01546) Birth 1 December 1890 -- Wildervank, Veendam, Groningen, Netherlands
 Death 7 May 1985 (Age 94) -- Groningen, Groningen, Groningen, Netherlands
  
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  Marriage  28 August 1919   -- Wildervank, Veendam, Groningen, Netherlands Marriage  28 August 1919   -- Wildervank, Veendam, Groningen, Netherlands
 - Pedigree Tree 
 Descendancy Chart
 Ancestry Chart
 Compact Chart
 Circle Diagram
 Hourglass Chart
 Family with spouse
 Gerrit Zielstra
 Roelfien Zielstra- Johanna Mulder  (I03319) Birth 10 May 1893 -- Gieten, Aa en Hunze, Drenthe, Netherlands (I03319) Birth 10 May 1893 -- Gieten, Aa en Hunze, Drenthe, Netherlands
 Death 24 December 1979 (Age 86) -- Groningen, Groningen, Groningen, Netherlands
 
 - Number of Children: 1 
 - Roelfien Zielstra  (I22585) Birth 1925 -- Wildervank, Veendam, Groningen, Netherlands (I22585) Birth 1925 -- Wildervank, Veendam, Groningen, Netherlands
 Death 10 February 1945 (Age 20) -- Ermelo, Ermelo, Gelderland, Netherlands
  
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