Frederick II Hohenstaufen

Frederick II (26 December 1194 – 13 December 1250; Latin: Fridericus, Federicus, Italian: Federico, German: Frîderich, Friedrich) was King of Sicily from 1198, King of Germany from 1212, King of Italy and Holy Roman Emperor from 1220 and King of Jerusalem from 1225. He was the son of emperor Henry VI of the Hohenstaufen dynasty and of Constance, heiress to the Norman kings of Sicily.