(1) He is married to Anna Margaretha de Bock.
They got married on August 8, 1913 at 's Gravenhage , he was 29 years old.Source 1
The couple were divorced from April 26, 1934 at 's Gravenhage .
(2) He is married to Maria Elisabeth Wilhelmina Zalme.
They got married on May 25, 1934 at 's Gravenhage , he was 50 years old.Source 2
Jan Frederik Sirks | ||||||||||||||||||
(1) 1913 | ||||||||||||||||||
Anna Margaretha de Bock | ||||||||||||||||||
(2) 1934 | ||||||||||||||||||
Maria Elisabeth Wilhelmina Zalme |