Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Italian Catholic diocese of Gubbio is in the province of Perugia, in Umbria, central Italy. In the eighth century Gubbio became part of the Patrimony of St. Peter, together with the duchy of Spoleto. It was often at war with Perugia, and its victory in 1151 over Perugia and ten other towns is famous. St. Ubaldo, bishop of the city, directed the campaign. Gubbio favoured the Ghibelline party; however, in 1260 the Guelphs surprised the town, and drove out the Ghibellines; who returned again in 1300 under the leadership of Uguccione della Faggiuola, and Federigo da Montefeltro, whereupon Pope Boniface VIII sent his nephew Napoleone Orsini who drove them out once more.

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