In 1272 the Kingdom of Albania was created after a delegation of Albanian noblemen from Durrës signed a treaty declaring union with the Kingdom of Sicily under Charles. Charles soon imposed military rule, new taxes, took sons of Albanian noblemen hostage to ensure loyalty, and confiscated lands for Angevin nobles. This led to discontent among Albanian noblemen, several of whom turned to Byzantine Emperor Michael VIII. In late 1274, Byzantine forces helped by local Albanian noblemen capture Berat and Butrint. Charles' attempt to advance towards Constantinople failed at the Siege of Berat (1280–1281). A Byzantine counteroffensive ensued, which drove the Angevins out of the interior by 1281. The Sicilian Vespers further weakened the position of Charles, who died in 1285. By the end of the 13th century, most of Albania was under Byzantine Emperor Andronikos II Palaiologos. In 1296 Serbian king Stephen Milutin captured Durrës. In 1299 Andronikos II married his daughter Simonis to Milutin and the lands he had conquered were considered as dowry. In 1302, Philip I, Prince of Taranto, grandson of Charles, claimed his rights on the Albanian kingdom and gained the support of local Albanian Catholics who preferred him over the Orthodox Serbs and Greeks, as well as the support of Pope Benedict XI. In the summer of 1304, the Serbs were expelled from the city of Durrës by the locals who submitted themselves to Angevin rule.