He is married to Mettje Romkes van der Zaag.
They got married on April 28, 1877 at Kollumerland c.a., Friesland, Nederland, he was 34 years old.Source 3
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Jan Hamstra | ||||||||||||||||||
1877 | ||||||||||||||||||
Mettje Romkes van der Zaag | ||||||||||||||||||
Geboorteregister Oldehove 1843
https://nl.findagrave.com/memorial/163476378/jan-hamstra
Huwelijksregister 1877, Kollumerland c.a.