(1) He is married to Bartha Cornelia Blankestein.
They got married on June 29, 1887 at Utrecht, he was 23 years old.
(2) He is married to Geertruida Johanna Bonnet.
They got married on July 5, 1909 at Leiden, he was 45 years old.
(3) He is married to Maria Elkerbout.
They got married on June 21, 1916 at Leiden, he was 52 years old.
The couple were divorced from July 9, 1926 at Leiden.
The data shown has no sources.