Parthian king; according to some scholars, the sixth of that name, mentioned in I Macc. xiv. 2-3, as having entrapped Demetrius, who had rebelled against him. Demetrius married a daughter of Arsaces and, according to Josephus ("Ant." xiii. 5, § 11), died in captivity. He is further mentioned—in I Macc. xv. 22—in the number of kings to whom Rome sent the edict which forbade the persecution of the Jews. He is also known as Mithridates I.