He is married to Irmgard van Kleef.
They got married in the year 1316, he was 46 years old.Source 1
Child(ren):
Heer van Horne, Altena, Weert, Kortessem, Perwez, Herlaer, heer van Malden, pandheer van Cranenborch (Kranenburg), ridder.
Gerard I van Horne | ||||||||||||||||||||||||||||||||||
1316 | ||||||||||||||||||||||||||||||||||
Irmgard van Kleef |
http://nl.wikipedia.org/wiki/Gerard_I_van_Horne
www.kareldegrote.nl (Reeks 20)