Philip was born and raised in Ephesus, which was renamed for a time Arsinoea after his mother.Arsinoe II’s article at Livius.org In 282 BC, his mother accused his half-brother Agathocles of treason and his father ordered the execution of Agathocles. After the death of his half-brother, Agathocles’ cousin-wife Lysandra with their children fled to Seleucus I Nicator in Babylon. Seleucus I used this bitter dynastic succession feud as an opportunity to expand his dominions. In the Battle of Corupedium in 281 BC, Seleucus I defeated Lysimachus in which his father died in battle. Seleucus I added Asia Minor and part of Thrace to his empire.Lysimachus’ article at Livius.orgArsinoe II’s article at Livius.org
