Cresconius believed that because Santiago was the burial place of
Saint James the Greater, his see naturally occupied a superior place amongst the dioceses of the West as an "apostolic see." To this end, he proclaimed himself
Episcopus Iriensis et Apostolicae Sedis. However, this assumption was not supported by
Rome and
Pope Leo IX excommunicated him at the
Council of Rheims (1049). Nevertheless, Cresconius continued using this title, and the bishops of
Lugo,
Dumio,
Oviedo, and
Porto acknowledged his authority and primacy. In 1056, he presided over the Council of Compostela where he prohibited the use of weapons by clerics, and also forbade that clerics be married. He opened
parochial schools and fought pagan
superstitions in existence even before the
Roman conquest of Galicia. ==References==