Answer
Yes, Philip was married to Christina of Norway. Christina was the daughter of King Haakon V of Norway and his wife Euphemia of Rügen. The couple married in 1339, and they had two children together: Haakon VI of Norway and Ingeborg, who married Duke Albrecht II of Mecklenburg. Christina died in 1372, and Philip remarried in 1376 to Elizabeth of Pomerania.