House of Gorizia
After the death of his mother's cousin, Margaret of Tyrol in 1269, Frederick remained the sole descendant of the House of Gorizia-Tyrol which had ruled a vast territory in the Eastern Alps, comprising Tyrol, Carinthia and Carniola. However, due to his problems at home, he is not known to have ever raised any claims to those territories which thus passed to the Habsburgs.