Pope Lucius III (c. 1100 – 25 November 1185), born Ubaldo Allucingoli, reigned as head of the Catholic Church and ruler of the Papal States from 1 September 1181 to his death in 1185. Born to an aristocratic family in Lucca, prior to being elected pope, he had a long career as a papal diplomat. His papacy was marked by conflicts with Holy Roman Emperor Frederick I, his exile from Rome, and the initial preparations for the Third Crusade.
Born in Lucca, Ubaldo Allucingoli rose to prominence within the Catholic Church, eventually becoming Pope Lucius III. He was appointed cardinal by Pope Innocent II and served as papal legate in France, Sicily, and other regions. He was involved in negotiating the Treaty of Venice in 1177, and was elected pope in 1181.
