Phraates V

Phraates V (Persian: فرهاد پنجم‎‎), known by the diminutive Phraataces (Ancient Greek: Φραατάκης), ruled the Parthian Empire from 2 BC to AD 4. He was the younger son of Phraates IV of Parthia (37-2 BC) and Musa of Parthia, with whom he is associated on his coins. Under Phraates V a war threatened to break out with Rome about the supremacy in Armenia and Media. But when Augustus (27 BC-AD 14) sent his adopted son Gaius Caesar into the east in order to invade Iran, the Parthians preferred to conclude a treaty (AD 1), by which once again Armenia was recognized as in the Roman sphere. Soon afterwards Phraates V and his mother were slain by the Parthians, about 4. Josephus alleges that Phraates V married his mother Musa, and, this being unacceptable to the Parthians, they rose up and overthrew him, offering the crown to Orodes III of Parthia (who ruled briefly in 6).

Source :

https://en.wikipedia.org/wiki/Phraates_V