Mitrobates
Following the reorganization of Darius I , he was succeeded by Megabazus ( circa 500 BC ) and then his son Oebares II and Artabazus ( 479 ) , who established the Persian Pharnacid dynasty , which would rule Hellespontine Phrygia until the conquests of Alexander the Great ( 338 BCE ) . 
<triplet> Artabazus <subj> Pharnacid dynasty <obj> family