The 1691 papal conclave was convened on the death of Pope Alexander VIII and ended with the election of Cardinal Antonio Pignatelli as Pope Innocent XII. It lasted for five months, from 12 February to 12 July 1691. The conclave became deadlocked after the Catholic monarchs opposed the election of Gregorio Barbarigo, who some members of the College of Cardinals also viewed as too strict. The conclave only ended in July when cardinals started to become ill from the heat, and after French cardinals agreed to vote for Pignatelli despite him coming from Spanish-controlled Naples.
The pope is the bishop of Rome and the visible head of the worldwide Catholic Church. He is also known as the supreme pontiff, Roman pontiff, or sovereign pontiff. From the 8th century until 1870, the pope was the sovereign or head of state of the Papal States, and since 1929 of the much smaller Vatican City state. From a Catholic viewpoint, the primacy of the bishop of Rome is largely derived from his role as the apostolic successor to Saint Peter, to whom primacy was conferred by Jesus, who gave Peter the Keys of Heaven and the powers of "binding and loosing", naming him as the "rock" upon which the Church would be built. The current pope is Leo XIV, who was elected on 8 May 2025 on the second day of the 2025 papal conclave.
Pope Alexander VIII, born Pietro Vito Ottoboni, was head of the Catholic Church and ruler of the Papal States from 6 October 1689 to his death in February 1691. He is the most recent pope to take the pontifical name "Alexander".