Conrad IV of Germany

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Conrad IV
King of Germany (formally King of the Romans) King of Italy
Reign	May 1237 – 21 May 1254
Predecessor	Henry (VII)
Successor	William
King of Sicily
Reign	13 December 1250 – 21 May 1254
Predecessor	Frederick I
Successor	Conrad II
King of Jerusalem
Reign	4 May 1228 – 21 May 1254
Predecessor	Isabella II and Frederick I
Successor	Conrad III
Regent	Frederick (until 1243), Alice (1243–1246), Henry (1246–1253) and Plaisance (from 1253)
Duke of Swabia
Reign	12 February 1235 – 21 May 1254
Predecessor	Henry
Successor	Conrad IV
Born	25 April 1228 Andria, Kingdom of Sicily
Died	21 May 1254(1254-05-21) (aged 26) Lavello, Kingdom of Sicily
Burial	Messina Cathedral
Spouse	Elisabeth of Bavaria
Issue	Conradin
House	Hohenstaufen
Father	Frederick II, Holy Roman Emperor
Mother	Isabella II of Jerusalem

Conrad (25 April 1228 – 21 May 1254), a member of the Hohenstaufen dynasty, was the only son of Emperor Frederick II from his second marriage with Queen Isabella II of Jerusalem. He inherited the title of King of Jerusalem (as Conrad II) upon the death of his mother in childbed. Appointed Duke of Swabia in 1235, his father had him elected King of Germany (King of the Romans) and crowned King of Italy (as Conrad IV) in 1237. After the emperor was deposed and died in 1250, he ruled as King of Sicily (Conrad I) until his death.