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In 20 September 1378 the French Cardinals who opposed new Pope Urban VI gathered in Fondi and after they deposed Urban VI they elected Robert Cardinal de Geneve as Antipope Clement VII...
Near the end of 1378 Clement VII set up his court in Avignon(since Rome was occupied by Urban VI) under the protection of King Charles V of France who recognised him as the legitimate Pope, also he gained recognition from Scotland, Castille, Aragon, Navara and some German Principalities...

WI Charles V decided to invade Rome and set up Clement VII as Pope by force? By canon law Urban's election could be challenged while Clement's seemed slightly more lawful... Or such a move would cause HRE's and England's intervention? Is there any chance that England ould use the French invasion as an excuse to press their succession issue?
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