He is married to Durkje Hoekstra.
They got married on September 8, 1894 at Kollumerland c.a., Friesland, Nederland, he was 22 years old.Source 4
Child(ren):
IJsbrand Cuperus | |||||||||||||||||||||||||||||||||||
1894 | |||||||||||||||||||||||||||||||||||
Durkje Hoekstra | |||||||||||||||||||||||||||||||||||
Geboorteregister 1871, Menaldumadeel
Overlijdensregister 1954, Dokkum
https://www.graftombe.nl/names/info/202028/cuperus
Huwelijksregister 1894, Kollumerland c.a.