When, against expectations, Philip became the next heir for the County of Savoy, he gave his church offices up and married Adelaide, Countess Palatine of Burgundy, on 12 June1267. He became count of Savoy in 1268, and in 1272 he also acquired the County of Bresse. While he was at first successful in extending the power of Savoy, in 1282 he was opposed by a coalition of King Rudolph I, Charles of Anjou (who was also count of Provence), the dauphin, and the counts of Geneva. He appointed his nephew, Amadeus, as his successor, and died childless in 1285.