(1) He is married to Elisabeth Kooistra.
They got married on January 23, 1926 at Achtkarspelen (Fr), he was 20 years old.Source 3
(2) He is married to Martje Veenstra.
They got married on June 28, 1947 at Achtkarspelen (Fr), he was 41 years old.Source 4
grandparents
parents
brothers/sisters
children
Pieter Hamstra | ||||||||||||||||||
(1) 1926 | ||||||||||||||||||
Elisabeth Kooistra | ||||||||||||||||||
(2) 1947 | ||||||||||||||||||
Martje Veenstra | ||||||||||||||||||
Geboorteregister 1905, Achtkarspelen
https://www.graftombe.nl/names/info/303807/hamstra
Huwelijksregister 1926, Achtkarspelen