LSJ
Ion. ἀμόθεν, Adv. ; (< ἁμός): — from some place or other, τῶν ἀμόθεν γε, θεά,… εἰπὲ καὶ ἡμῖν Od. 1.10; ἁ. γέ ποθεν from some quarter or other, Pl. Grg. 492d, Lg. 798b; ἀ. alone, Opp. C. 1.401.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)