δώσων
From LSJ
ὁ γοῦν κυνικὸς Μένιππος ἁλμοπότιν τὴν Μύνδον φησίν (Athenaios 1.34e) → At any rate the Cynic (satirist) Menippus says that Myndus is a brine-drinking town.
English (LSJ)
οντος, ὁ, fut. part. of δίδωμι,
A always going to give, always promising: hence Δώσων as a name of Antigonus II, Plu.Cor.11.