Alfonso VII of León and Castile
Pope Calixtus II (Guy of Burgundy), Archbishop of Vienne since 1088, was elected pope at Cluny on 2 February 1119. He spent more than a year fortifying France and Germany against the excommunicated Emperor Henry V through synods and councils, and dealing with affairs as co-regent in Castile for his nephew Alfonso VII of León and Castile, who had become heir to the throne in 1109, and then king in 1116. In the spring of 1120, Calixtus turned his attention to Italy, arriving in Rome on 3 July.