Question: Frederick of Pettorano, was the eldest illegitimate son of Frederick II, king of Sicily and Germany, besides Frederick of Pettorano, Frederick II probably named two other sons after himself: another illegitimate son, Frederick of Antioch, and a legitimate son by his wife, Isabella of England, was Holy Roman Empress, Queen of the Germans, and Queen consort of which location?
Sentence (from "Frederick of Pettorano"): Besides Frederick of Pettorano, Frederick II probably named two other sons after himself: another illegitimate son, Frederick of Antioch, and a legitimate son by his wife Isabella.
Relevant evidence: Yes