NN married Sijtsma Maria Alida Margaretha. Maria (daughter of Sijtsma Abraham Nikolaas and Brouwer Adriana) was born on 12 Jan 1904 in Leiden; died on 23 Apr 2001 in Leiden. [Group Sheet]

1. Sijtsma Maria Alida Margaretha was born in 1925 in Leiden; died on 12 May 1946 in Zoeterwoude.