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Marriage 31 December 1917 -- Groningen, Groningen, Groningen, NetherlandsAntje Boersma 
(I03807) Birth 3 October 1896 -- Grijpskerk, Zuidhorn, Groningen, Netherlands
Death 30 September 1969 (Age 72)
Number of Children: 1 
Johan Gerard Landstra 
(I21544) Birth 1925 -- Groningen, Groningen, Groningen, Netherlands
Death 1 December 1944 (Age 19) -- Hamburg Ladelund, Germany
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