He is married to Joanne Josepina Maria Steffens.
They got married
Hun kinderen:
Paul Onsia
Jozef Onsia
Herman Onsia
Maria Gabriella Onsia
Leo Onsia
Erik Onsia
Jan Onsia
Bron: Geneanet ; Jurgen Weyts ; 20100311
Bron geboorte- en overlijdensdatum: www.geneanet.org ; Familiegeschiedenis van Marie-Thérèse VERHEYDEN ; eigenaar: Marie THérèse Verheyden ; 20220214.
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