Philip I de Croÿ (1435–1511) was Seigneur de Croÿ and Count of Porcéan. Philip I was a legitimate heir to the powerful House of Croÿ. He was the eldest surviving son of Antoine de Croÿ, Comte de Porcéan and Margaret of Lorraine-Vaudémont. Philip was raised with Charles the Bold, who arranged Philip's marriage to Jacqueline of Luxembourg in 1455. The bride's father, Louis de Luxembourg, Count of Saint-Pol, was extremely against the alliance and attempted to win his daughter back by force, but the Count of Porcéan closed the borders of Luxembourg and announced that the marriage had been consummated. He was also Governor of Luxembourg and Ligny.