He is married to Louise Maria Antoinette Charlotte le Blanc.
They got married on March 30, 1876 at Parijs, he was 25 years old.
Child(ren):
Bron: http://www.geneall.net/W/per_page.php?id=1172183
en: http://www.radziwill.com/genealogy.htm
en: http://gw4.geneanet.org/index.php3?b=meuropeennes⟨=en;p=konstanty+vincenz+maria;n=radziwill;oc=1
The data shown has no sources.