Clement IV,d. 1268, pope (1265–68), a Frenchman named Guy le gros Foulques; successor of Urban IV. He was a lay adviser of King Louis IX of France, but after his wife's death he entered the church. As pope he continued the struggle against the HohenstaufenHohenstaufen
, German princely family, whose name is derived from the castle of Staufen built in 1077 by a Swabian count, Frederick. In 1079, Frederick married Agnes, daughter of Holy Roman Emperor Henry IV, and was created duke of Swabia.
..... Click the link for more information. by confirming the agreement with Charles ICharles I
(Charles of Anjou), 1227–85, king of Naples and Sicily (1266–85), count of Anjou and Provence, youngest brother of King Louis IX of France. He took part in Louis's crusades to Egypt (1248) and Tunisia (1270).
..... Click the link for more information. (Charles of Anjou) that gave Charles the crown of Naples, by raising an army for him, and by investing him with the kingdom. When ConradinConradin
, 1252–68, duke of Swabia, titular king of Jerusalem and Sicily, the last legitimate Hohenstaufen, son of Holy Roman Emperor Conrad IV. While Conradin was still a child in Germany, his uncle Manfred made himself (1258) king of Sicily.
..... Click the link for more information. attacked Charles, Clement had a crusade preached against him. He was a strong opponent of nepotism, and he was the patron of Roger BaconBacon, Roger,
c.1214–1294?, English scholastic philosopher and scientist, a Franciscan. He studied at Oxford as well as at the Univ. of Paris and became one of the most celebrated and zealous teachers at Oxford.
..... Click the link for more information. . He was succeeded by Gregory X.
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