Why was Ptolemy called Philadelphus?
Some time after 275 BC, Arsinoe I was charged with conspiracy and exiled to Coptos. Probably in 273/2 BC, Ptolemy married his older sister, Arsinoe II. As a result, both were given the epithet “Philadelphoi” (Koinē Greek: Φιλάδελφοι “Sibling-lovers”). Was Cleopatra V Egyptian? Cleopatra V of Egypt Father Uncertain: Ptolemy IX or Ptolemy X Mother…