Husband: Roelof Jan Kooijman
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 Father:Willem Iemkes Kooijman
 Mother:Johanna India
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   Wife: Anna de Jong
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 Father:Hermanus de Jong
 Mother:Trijntje Wortel
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CHILDREN
   Name: Willem Kooijman
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Spouses: Mietje Paulina Boshuizen  
   Name: Herman Kooijman
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Spouses: Sietske Bergsma  
   Name: Johan Kooijman
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Spouses: Akkie van der Sluis