Emperor Frederick II 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. He was born in Jesi in Le Marche 26 December in 1194. He died in 13 December 1250 in Torremaggiore.

See Castel del Monte.