by adding citations to reliable sources . Unverifiable material may be challenged and removed. (May 2009) See also: Category: Eunuchs In chronological order. Aspamistres or Mithridates (5th century BC) Bodyguard of Xerxes I of Persia , and (with Artabanus ) his murderer. Artoxares : An envoy of Artaxerxes I and Darius