Appearance and Character
A Clash of Kings
During the Battle of the Blackwater, where Ser Philip fights for the combined Lannister-Tyrell army, he kills Lord Bryce Caron, the Lord of Nightsong, in single combat. After the battle the Iron Throne names Philip the new Lord of Nightsong and gives him all the lands, rights and incomes of House Caron, forming House Foote of Nightsong.
A Storm of Swords
Philip, the new Lord of the Marches, attends the wedding of Sansa Stark and Tyrion Lannister. He is among the gathered nobility that welcomes the Dornish party headed by Prince Oberyn Martell to King's Landing.
Philip attends the royal wedding of Margaery Tyrell and King Joffrey I Baratheon. He is called as a witness for the prosecution in the trial of Tyrion for the death of Joffrey. He tells of how he saw Tyrion fill the wedding chalice.