Abbott-Smith Manual Greek Lexicon
ἀρχηγός (G747)
4 ἀρχηγός , -όν , [in LXX for רֹאשׁ , נָשִׂיא etc.;] beginning , originating : more freq., as subst.; founder , author (Lat. auchor ; so sometimes in π. , v. MM, s.v.; Milligan, NTD , 75): Ac 3:15 (R, mg.), He 2:10 (R, txt.; but v. Westc., in l., and Page, Ac 3:15 ). prince , leader (so in MGr., v. Kennedy, Sources , 153): Ac 3:15 (R, txt.) 5:31 , He 2:10 (cf. R, mg.) 12:2 (Cremer, 117).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain