Pope Martin IV
In 1282, the Sicilians rose up against the second dynasty of the Angevins on the Sicilian Vespers and massacred the garrison soldiers throughout the island. Peter III responded to their call, and landed in Trapani to an enthusiastic welcome five months later. This caused Pope Martin IV to excommunicate the king, place Sicily under interdiction, and offer the kingdom of Aragon to a son of Philip III of France.