She is married to Cornelis 't Hart.
They got married on September 4, 1912 at Rotterdam , she was 20 years old.Source 1
P.N Kalkman Pag. 113.
Frederika. Geb. Rotterdam 1 feb. 1892. Tr. Rotterdam 4 sept. 1912 Cornelis 't Hart, geb. aldaar 18 sept. 1889, fabrieksarbeider, zn. van Pieter 't Hart, werkman, en Agnita van Ingen.
Frederika Kalkman | ||||||||||||||||||
1912 | ||||||||||||||||||
Cornelis 't Hart |