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Royal Genealogy

Conrad IV
King of the Romans


Other Titles

King of Sicily, 1250-54†
Conrad II, King of Jerusalem, 1228-54†
Duke of Swabia, 1235

Main Events

Conrad was chosen king of the Romans, or German king, at Vienna, in place of his half-brother Henry, an election which was subsequently confirmed by the diet at Spires.  After spending some time in Italy he returned to Germany and began to take part in the quarrel which had arisen between the emperor and the pope.   In 1240, he called an assembly to Eger, where many of the princes declared openly against the pope, and was soon in arms against Siegfried, archbishop of Mainz, the leader of the papal party in Germany. Although defeated near Frankfort in August 1246 by the anti-king, Henry Raspe, landgrave of Thuringia, he obtained help from the towns and from his father-in-law Otto II, duke of Bavaria, and drove Henry Raspe to Thuringia. He was carrying on the struggle against Henry Raspeњs successor, William II, count of Holland, when the emperor died in December 1250, and a few days later Conrad narrowly escaped assassination at Regensburg.

In September 1246, he married Elizabeth (d. 1273), daughter of Otto of Bavaria, by whom he left a son, Conradin, whom he had never seen.   Having assumed the title of emperor in 1250, the Guelphs and Pope Innocent IV favoured William of Holland, so he, as leader of the Ghibellines, was excommunicated.   Assuming the title of king of Jerusalem and Sicily, he raised an army by pledging his Swabian estates and marched to Italy in 1251, where with the help of his illegitimate half-brother, Manfred, he overran Apulia and took Capua and Naples. He was preparing to return to Germany at the head of a large army when he died on the 21st of May 1254.

Place of birth: Andria, Apulia
Place of death: Lavello



1. J.E. Morby. Dynasties of the World: A Chronological and Genealogical Handbook. Oxford, etc.: Oxford University Press, 1989.
2. Encyclopaedia Britannica. Chicago: Encyclopaedia Britannica, 2018.
3. Encyclopaedia Britannica: A Dictionary of Arts, Sciences, Literature and General Information, 11th edn, vol. 6. New York: Encyclopaedia Britannica Co., 1911.
4. Thomas, J. The Universal Dictionary of Biography and Mythology, vol. 1 [part 2]. London: J.S. Virtue & Co., Limited, 1887.

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