Father: Count Wilhelm III of Horn
Born: 1215
Married: Unknown
Died: April 8, 1265

Mother: Princess Heilwig of Arberg
Born: 1222
Died: 1252

Children:
1. Count Wilhelm IV of Horn (b.1244)
2. Princess Margareta of Horn (b.1246)
3. Count Dietrich of Horn (b.1250)