Editing Pope Urban V (section)

===First mission===
In the summer of 1352  [[Pope Clement VI]] summoned Abbot Guillaume for an assignment.  Northern Italy had been in a chaotic state for some time, due to the ambitions of the Visconti of Milan, led by Archbishop Giovanni Visconti.  He had conquered much of Lombardy, seized the Papal city of Bologna, and was invading the borders of Florentine territory. In order to keep a hold on the territory for the Catholic Church, the Pope had hit on the scheme of making Archbishop Visconti his vicar of Bologna for the present. He drew up an agreement on 27 April 1352, which absolved the Visconti of all their transgressions and signed away much of northern Italy.<ref>{{cite book|author=Augustin Theiner|title=Codex diplomaticus dominii temporalis S. Sedis: 1335–1389|url=https://books.google.com/books?id=gj5QAAAAcAAJ|volume=Tome second|year=1862|publisher=Imprimerie du Vatican|location=Rome|language=fr, la|pages=223–233, no. CCXX}}</ref> The Pope even made the first payment on the subsidy which he was going to provide them. The Visconti, on their part, had no intention of observing the terms of the pact, one of which was the return of the Legation of Bologna to the Papacy, despite the fine words and promises they made in Avignon. On 26 July, Abbot Grimoard and Msgr. Azzo Manzi da Reggio, the Dean of the Cathedral of Aquileia, were presented with written instructions by Pope Clement to go to northern Italy as apostolic nuncios to deal with the situation. Guillaume was to receive the city of Bologna from the Visconti, who were illegal occupiers, and hand it over to Giovanni Visconti as the papal vicar, and to threaten with ecclesiastical censures any parties who did not adhere to the treaty.<ref>Gibbs, p. 170.  Gibbs is wrong in suggesting that, for a few minutes, Grimoard was lord of Bologna.  He was only a procurator, never a principal.</ref>  This he did on 2 October 1352. Guillaume was allotted 8 gold florins a day for his expenses, his associate Anzo only 4 florins. While he was in Milan he was also able to get the Archbishop to renew the treaty that was expiring with the King and Queen of Sicily.<ref>Lecacheux, p. 419 and n. 1; pp. 421–422.</ref>