Ptolemy IV Mixed Pair... | Coin TalkPtolemy IV Philopator[note 1] (Greek: Πτολεμαῖος Φιλοπάτωρ, Ptolemaĩos Philopátōr "Ptolemy Beloved of his Father"; 245/4–204 BC[2]), son of Ptolemy III and Berenice II, was the fourth Pharaoh of Ptolemaic Egypt from 221 to 204 BC. The decline of the Ptolemaic dynasty began under the reign of Ptolemy IV.