"Pope Callixtus II or Callistus II (ca. 1065 \u2013 13 December 1124), born Guy of Burgundy, reigned from 1 February 1119 to his death in 1124. His pontificate was shaped by the Investiture Controversy, which he was able to settle through the Concordat of Worms in 1122."@en . "Callixtus II"@en . "1124-12-13Z"^^ . "French pope" . . . . . . "1124Z"^^ . . .