Pandion II was son and heir of Cecrops II, King of Athens. He was exiled from Athens by the sons of Metion and fled to Megara where he married the daugher of King Pylas by whom he became father of Aegeus, Pallas, Nisos and Lykos, eventially inheriting the kingdom of Megara when Pylas died.
After this death his sons returned to Athens and drove out the sons of Metion.