Luitzen Jans Koolstra
Birth:
13 Apr 1894
Menalduamadeel, Friesland, Netherlands
Individual Information  
FCID:6192:9019      
Parents
Father:
Jan Koolstra
Mother: Hielkje Kingma
Marriage(s)
Family Group
Trijntje Rients Hilverda
md. 8 May 1920 Menalduamadeel, Friesland, Netherlands
  Children