Artabanus II, incorrectly known in older scholarship as Artabanus III, was King of Kings of the Parthian Empire from 12 to 38/41 AD, with a one-year interruption. He was the nephew and successor of Vonones I. His father was a Dahae prince, whilst his mother was a daughter of the Parthian King of Kings Phraates IV
Coin of Artabanus II, minted at Seleucia in 27 AD
Letter in Greek of the Parthian king Artabanus II to the inhabitants of Susa in the 1st century CE, requesting the appointment of Hecataeus as treasurer. Louvre Museum.
Vonones I was an Arsacid prince, who ruled as King of Kings of Parthian Empire from 8 to 12, and subsequently as king of Armenia from 12 to 18. He was the eldest son of Phraates IV and was sent to Rome as a hostage in 10/9 BC in order to prevent conflict over the succession of Phraates IV's youngest son, Phraataces.
Tetradrachm of Vonones I, Seleucia mint