Philadelphus
Φιλάδελφος
(Φιλάδελφος), a surname of Ptolemaeus II. king of Egypt [PTOLEMAEUS II.], and of Attalus II. king of Pergamum [ATTALUS II.].
Philadelphus is also the name of one of the Deipnosophistae in Athenaeus, who calls him a native of Ptolemais, and describes him (i. p. 1) as a distinguished man in philosophical speculation and of an upright life.
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.