Bruno (bishop of Segni)
Bruno was educated at the Benedictine monastery of San Perpetuo at Asti and went to Bologna to study the liberal arts. Between 1070 and 1080 he was a canon of Siena. The proposals for reform of Gregory VII were supported by him, at the Synod of 1079, he appeared against Berengar of Tours and his doctrine of the Eucharist.
In 1079 he was probably chosen at the behest of the Pope as Bishop of Segni, the first secure evidence goes back to the Roman Synod in May 1092. It is not clear whether Segni a diocese with Cardinal rank was then, or whether Bruno owed this position to his personal appreciation by the pope. This episcopate had Bruno held until his death. His retreat as a monk in Monte Cassino for health reasons in 1102 and his election as abbot in 1107 was accepted by Paschal II only under the condition that he continue managing his diocese and forty days a year for a job in the service of the Roman Curia were available. Bruno's polemical opposition to the Pravilegium of 1111 (Treaty of Ponte Mammolo ) Paschal offered the opportunity to Bruno prohibit its dual function in the hierarchy and to restrict it to the office of bishop.
One of his lasting achievements is the chapter divisions and exegetical commentary on the Apocalypse of John.
It was 1181 or 1183 by Pope Lucius III. canonized. His feast day is celebrated on July 18.