Philip I Philadelphus (between 124 and 109 – 83 or 75 BC) reigned as King of Syria, a ruler of the Seleucid Empire, in the early years of the 1st century BC when the country was torn apart by civil wars amongst Seleucid claimants. Seleucus VI, Philip's oldest brother, was killed during the war with their cousin Antiochus X in 94 BC. Philip declared himself king jointly with his twin Antiochus XI, and took the capital Antioch, where Antiochus XI took residence as the senior king, while Philip remained in a base in Cilicia. Antiochus X returned and killed Antiochus XI in 93 BC. Philip allied with another brother, Demetrius III, who ended up taking Antioch after Antiochus X's death, and besieged Philip, who allied himself with the Parthians and took the capital, becoming the senior king of Syria. Philip's death year is unknown, but probably before 75 BC. He was apparently considered the last legitimate king of Syria by the Romans, who continued to issue coins with Philip's portrait until 13 BC. (Full article...)