BRUNO (Saint) Bishop (July 18) (12th century) A Lombard by birth and a distinguished scholar. After his conclusive defence of the Catholic doctrine of the Eucharist at the Council of Rome (A.D. 1079), Pope Saint Gregory VII made him Bishop of Segni. He assisted at several Councils, and for a time was Abbot of Monte Cassino. He died A.D. 1125. He has left several useful Theological works.