He is married to Anna Helena Robben.
They got married on March 28, 1912 at Emmen, Gemeente Emmen, Drenthe, Nederland, he was 25 years old.Source 3
Child(ren):
grandparents
parents
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Harm Hindrik - Harm Hendrik Gerdes | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1912 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Anna Helena Robben | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I25359.php
25 in 1912, 54 in 1941, gemeente Odoorn
gezinskaart 1918-1936 Gerdes-Robben scan 684788 #4867wettiging 1 kind