(1) He is married to Fenna de Boer.
They got married on December 4, 1898 at Groningen , he was 42 years old.Source 1
The couple were divorced from September 28, 1917 at Groningen .Source 1
(2) He is married to Johanna Cornelia Dekkers.
They got married on June 16, 1920 at Den Haag, he was 64 years old.Source 2
0075 Regionaal Historisch Centrum Groningen - http://www.allegroningers.nl
0081 GA Den Haag - website http://haagsgemeentearchief.nl/