born 0441; 999, Tours, Touraine
died Jan. 10, 1088, priory of Saint-Cosme, near Tours
French theologian.
He became canon of Tours Cathedral and archdeacon of Angers ( 0441; 1040). He rejected the prevailing eucharistic theology and argued against any material change to the bread and wine. He was opposed by numerous theologians, most notably Lanfranc , and may have been excommunicated (1050) by Pope Leo IX . He was condemned by the Council of Vercelli (1050) and the Synod at Paris (1051). After a compromise, he was again condemned in 1076, 1078, 1079, and 1080 and spent the rest of his life in ascetic solitude.