The Columbia Encyclopedia, Sixth Edition. 2001-07.
Demetrius II, king of ancient Syria
(Demetrius Nicator) (dm´trs nk´tr) (KEY) , d. c.125 B.C., king of ancient Syria, son of Demetrius I. He was aided against the usurper, Alexander Balas, by Ptolemy VI (Ptolemy Philometer). He married Ptolemys daughter, Cleopatra Thea, even though she was already married to Alexander Balas. Demetrius ascended the throne in 146 B.C., but in fighting against the Parthians in 141 he was captured. Before his capture Demetrius reaffirmed Judaean independence, freeing the Jews from Syrian taxation. Tryphon, who served under Alexander Balas as governor of Antioch, had revolted and had put Alexander Balas infant son, Antiochus Dionysius, on the throne. Two years later Tryphon murdered the boy and took the throne himself. Demetrius, coming back from prison, regained the throne in 128 B.C. He soon lost it again and died in battle at Tyre, fighting a war with Egypt.