Tjitske Wiltjes Kroese - Pedigree | FamilyCentral
 24 Dec 1876 -
Family Group
Family Group
Gerben Roels Koolstra
 md. 16 May 1896
  Children
1.
Sjoukje Gerbens Koolstra
    2.
Wilt Gerbens Koolstra
    3.
Living