(1) He is married to Boodske Kloetstra.
They got married on May 21, 1931 at Tietjerksteradeel, Friesland, Nederland, he was 23 years old.Source 3
(2) He is married to Trijntje Stenekes.
They got married on March 18, 1944 at Tietjerksteradeel, Friesland, Nederland, he was 36 years old.Source 4
grandparents
parents
brothers/sisters
children
Marten Koster | ||||||||||||||||||
(1) 1931 | ||||||||||||||||||
Boodske Kloetstra | ||||||||||||||||||
(2) 1944 | ||||||||||||||||||
Trijntje Stenekes | ||||||||||||||||||
Geboorteregister 1908, Achtkarspelen
https://www.graftombe.nl/names/info/537602/koster
Huwelijksregister 1931, Tietjerksteradeel