(1) He is married to Johanna de Wacht.
They got married on August 23, 1896 at Groningen (Gr), he was 26 years old.Source 4
The couple were divorced from February 3, 1904 at Groningen (Gr).Source 5
(2) He is married to Anje Puma.
They got married on April 3, 1904 at Groningen (Gr), he was 34 years old.Source 5
Geboorteregister Groningen 1869
Overlijdensregister Groningen 1950
http://www.graftombe.nl/names/info/692269/maas
Huwelijksregister Groningen 1896
Huwelijksregister Groningen 1904