He is married to Henrica Cornelia Maria van Baast.Source 3
They got married on August 3, 1920 at Tilburg, Noord-Brabant, Nederland , he was 22 years old.
Joannes Petrus van Helfteren | ||||||||||
1920 | ||||||||||
Henrica Cornelia Maria van Baast |
RAT Huwelijksregister 1920, archiefnummer 16, Ambtenaar van de burgerlijke stand te Tilburg 1811-1957, aktenummer 401