(secular name, Lotario di Segni). Born 1160 or 1161, in Anagni; died July 16, 1216, in Perugia. Pope from 1198. Son of the wealthy count of Segni.
The time of Innocent Ill’s pontificate was the period of the medieval papacy’s greatest power. Innocent III strove to establish the supremacy of papal authority over secular government. He interfered in the internal affairs of European states. In 1198 he became guardian of Frederick II, the heir to the Sicilian throne, and he temporarily subordinated the Kingdom of Sicily to his own power. By instigating a struggle for the imperial throne between the Welfs and Hohenstaufens in Germany, Innocent weakened its central authority. The kings of England, Aragon, and Portugal, as well as the tsar of Bulgaria, all acknowledged themselves to be vassals of the pope.
Innocent III abolished Rome’s urban autonomy and restored the power of the pope over the entire territory of the papal state. He was the initiator of the Fourth Crusade. In striving to extend the domination of the Catholic Church to all of Eastern Europe he sanctioned the founding of the Order of the Knights of the Sword in 1202; in 1215 he organized the Crusade of the Teutonic knights against the Prussians. In 1209 he called for a crusade against the Albigensians. He persecuted heresy mercilessly and facilitated the organization of the Inquisition. Innocent III converted the mendicant orders that were coming into being at that time (especially the Franciscan Order) into a powerful weapon of papal policy.
M. L. ABRAMSON