Ἀρτόστης
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
Spanish (DGE)
-ου, ὁ Artostes hijo de Darío, Ctes.15 (cf. Ὀστάνης).
Greco-Persian Names
APers. arta (comp.), divine government, "göttliche Weltordnung", Arta (cf. Av. aša), Av. arəta, Skt. r̥ta + Av. uštā, according to one's wish, loc. of ušti, often used substantively in the sense of welfare, good fortune; whose welfare is from Arta.