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Phĭlădelphus, i, m., = Φιλάδελφος (loving one’s brother or sister), a Grecian and Roman surname.

  1. I. Ptolemaeus Philadelphus, a king of Egypt, Plin. 36, 7, 14, § 67; Gell. 6, 17, 3.
  2. II. Annius Philadelphus, Cic. Phil. 13, 12, 26.
  3. III. Philadelphus, a slave of Atticus, Cic. Att. 1, 11, 2: L. CALPVRNIVS L. L. PHILADELPHVS, Inscr. Maff. Mus. Veron. 274, 9.