Achias

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Hastings' Dictionary of the Bible [1]

Achias . An ancestor of Ezra ( 2E  Esther 1:2 ), omitted in Ezr. and 1 Es.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]

(Lat. id., for the Gr. text is no longer extant; prob. for Ahijai), a person named as son of Phinees (Phinehas), and father of Achitob (Ahitub) in the list of sacerdotal ancestors of Esdras or Ezra (2 [Vulg. 4]  Ezra 1:2); but, as the parallel list ( Ezra 7:3) gives no corresponding name, it is either an interpolation or, perhaps, a corruption for the AHIMAAZ (See Ahimaaz) of  1 Chronicles 6:8-9.

International Standard Bible Encyclopedia [3]

a - kı̄´as  : An ancestor of Ezra (2 Esdras 1:2). Omitted in other genealogies.

References