Uzerche numerous donations. The city of Uzerche began to take shape around the monastery. All the 100 resident monks were vassals of the abbot and he himself was a vassal of the king. In 1095 Pope Urban II travelled to Clermont-Ferrand to prepare for his first crusade and also made a visit to Uzerche in the same year. A monk named Maurice Bourdin, who was born in the neighbourhood of Uzerche, set up as an anti-pope from 1118 to 1121, under the name of Gregory VIII. The Benedictine Abbey was powerful and prosperous with its golden age from 12th to 13th
Erlembald had to ceded his rights in Milan to Pope Gregory VII. Gregory confirmed Atto and lent his support to Erlembald. At this, the height of his power, an unfortunate fire broke out in the city and was interpreted as divine punishment for supporting the controversial "pataria". The opposition factions in Milan signed a pact against Erlembald. He put down the revolt, but was killed in the battle and buried in S. Celso. From 6 to 26 May in 1095, Pope Urban II was present at Milan for the transferral of the relics of the canonised Erlembald to S. Dionigi. He