He is married to Maria Adelheid Klönne.
They got married on January 21, 1909 at Emmen, Gemeente Emmen, Drenthe, Nederland, he was 41 years old.Source 3
Child(ren):
grandparents
parents
brothers/sisters
children
Harm Hindrik van der Aa | ||||||||||||||||||||||||||||||||||
1909 | ||||||||||||||||||||||||||||||||||
Maria Adelheid Klönne | ||||||||||||||||||||||||||||||||||

Pauline Berens: Genealogienetwerk zus Greetje Berens voorheen EemslandBoekweitBoerenImmigratie
https://www.genealogieonline.nl/the-dutch-connection/I18327.php
gezinskaart van der Ahe-Klönne scan 679996 1918-1936