Archelaus of Egypt
From LoveToKnow 1911
ARCHELAUS, king of Egypt, was his son. In 56 B.C. he married Berenice, daughter of Ptolemy Auletes, queen of Egypt, but his reign only lasted six months. He was defeated by Aulus Gabinius and slain (55).
See Strabo xii. p. 558, xvii. p. 796; Dio Cassius xxxix. 57-58; Cicero, Pro Rabirio, 8; Hirtius (?), Bell. Alex. 66; also Ptolemies.

