Matilda II
Philip was married in c. 1223 to Matilda II, Countess of Boulogne. Philip, by right of his wife, became Count of Boulogne, Mortain, Aumale, and Dammartin-en-Goële. He revolted against his sister-in-law Blanche of Castile when his elder half-brother Louis VIII died in 1226. When Philip died in 1235, Matilda continued to reign and was married to Afonso III of Portugal.