Neilson Carel Debevoise, A Political History of Parthia (1938)
“ There is a story that the first Parthian leader, Arsaces, was a Bactrian who became discontented with the rule of the satrap Diodotus of Bactria, invaded Parthia, and successfully fomented a revolt. [38] Still a third and more detailed version is to be found in Arrian, [39] according to which either Arsaces or Tiridates was insulted by the Seleucid satrap. The brothers thereupon took five men into their confidence, killed the offender, and persuaded the people to revolt. Without additional evidence it is impossible to determine the correct account. ”
