Frederick is also known as: holy Roman Emperor/Emperor of Germany, King of Sicily (1198) and of Germany (1212)
Is the son Emperor Henry VI and Empress Constance of Germany.
They had 2 sons, 2 daughters: Jordan, Margaret, Henry and Agnes.
Frederick also had the following children:
Selvaggia
Conrad of Antioch
Richard of Theate
Catarina of Marano
Blanchefleur
Gerhard
Frederick of Pettorana