He is married to Geertruij Nederveen.
Source: Civil register - Marriage
Archive location: Brabants Historisch Informatie Centrum
General: Number of finding aid: 50.045
Item number: 2105
Municipality: Dussen
Type of record: huwelijk
Record number: 9
Registration date: 13-05-1880
Bridegroom: Gerrit Koops
Place of birth: Rijswijk
Bride: Geertruij Nederveen
Place of birth: Dussen
Father bridegroom: Bareld Koops
Mother bridegroom: Geertruij Rutte
Father bride: Wouter Nederveen
Mother bride: Maria Hagens
They got married on May 13, 1880 at Dussen, Noord-Brabant, Netherlands .Source 1