Herman Jan Kalkman
Sara Blanker
b. 1859, Rotterdam
d. 1929, Rotterdam
bur.  
occ.  
edu.  
rel.  
b. 1863, Goes
d. 1947, Rotterdam
bur.  
occ.  
edu.  
rel.  
Children
Clazina Francina Kalkman(1 Jul 1903 - 11 Oct 1992)