sep 24, 221 BC - 221 BC - Ptolemy III died and was succeeded by his son Ptolemy IV Philopator,

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In 221 BC, Ptolemy III died and was succeeded by his son Ptolemy IV Philopator, a weak king whose rule precipitated the decline of the Ptolemaic Kingdom. His reign was inaugurated by the murder of his mother, and he was always under the influence of royal favourites, who controlled the government. Nevertheless, his ministers were able to make serious preparations to meet the attacks of Antiochus III the Great on Coele-Syria, and the great Egyptian victory of Raphia in 217 BC secured the kingdom. A sign of the domestic weakness of his reign was the rebellions by native Egyptians that took away over half the country for over 20 years. Philopator was devoted to orgiastic religions and to literature. He married his sister Arsinoë, but was ruled by his mistress Agathoclea.

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