Husband: Frans Koster
   Born:                  at:   
Married:                  at:   
   Died:                  at:   
 Father:Piet Koster
 Mother:Aaltje Boomsma
        Other Spouses: 
   Wife: Antje Elisabeth Miedema
   Born:                  at:   
   Died:                  at:   
 Father:Arjen Miedema
 Mother:Jeltje Wassenaar
        Other Spouses: