Anselm St., called Baduarius after the name of his family (Badagio), was born at Milan, 1036. He succeeded, in 1061, his uncle, Pope Alexander II, as bishop of Lucca, which see he resigned in order to be. come a monk at Clugny. He returned to his see at the express order of Pope Gregory VI, who employed him for important embassies, and made him a cardinal. He tried to prevail on the canons of his cathedral church to submit to the common life, but met with so decided a resistance that he had to leave again his see. Leo IX sent him as his legate to Lombardy, where he died at Mantua, March 18, 1086. He wrote an apology of Gregory VII, a refutation of the claims of the anti-pope Guibert, and a treatise against the right of the secular princes to dispose of the property of the church. The two former may be found in Canisins, Antiquae Lectiones, and in the Bibl. Patrum. The life of Anselm was written by the Jesuit Bota (Notiz di San Anselmo, Verona, 1773, 8vo).