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Pope Calixtus II
head of the Catholic Church
Years: 1050 - 1124
Pope Blessed Calixtus II (or Calistus II) (died 13 December 1124), born Guy de Burgundy, the fourth son of William I, Count of Burgundy, is elected Pope on 1 February 1119 after the death of Pope Gelasius II.
His pontificate is shaped by the Investiture Controversy, which he is able to settle through the Concordat of Worms (in 1122).
