He was the son of Philip, King of Albania and Prince of Taranto, and Catherine II, Latin Empress.
[2] Upon the execution of his cousin Charles, Duke of Durazzo, in 1348, he succeeded as King of Albania.
Shortly after, his older brother Louis married their first cousin, Joanna I of Naples, and became king.
[3] In 1364, Philip succeeded as titular Latin Emperor of Constantinople and Prince of Achaea and Taranto on the death of his oldest brother, Robert.
On 20 October 1370, Philip married yet another Angevin, Elizabeth of Slavonia, former heir presumptive to the throne of Hungary.