Ptolemy Keraunos
On the accession of Ptolemy Philadelphus, Demetrius fell into disfavour (he apparently supported the wrong candidate, Ptolemy Keraunos), and was sent into exile to Upper Egypt. According to one account a statue at Memphis Saqqara was attributed to him. He is said to have died from the bite of a venomous snake. His death appears to have taken place soon after the year 283 BC.