οὐ τῷ πλήθει ἀλλὰ τῷ ἀξιώματι → not in numbers but in quality
SourceSpanish (DGE)
-ου, ὁ Arbupalas cuñado de Darío, Arr.An.1.16.3.
Greco-Persian Names
Ἀρβου + παλης (?); Justi, NB. 21, connects ἀρβου- with *arbu, akin to ἀλφός, and -παλης with a word akin to πῶλος, colt, Goth. fula, I.E. *fo(u); weisse Fallen besitzend; etymology doubtful.