(Πύγμων), the engraver of a gem in the Florentine Museum, the inscription on which has been variously read ΠΕΙΓΜΟ, ΠΕΠΓΑΜΟΓΥ, and ΠΥΓΜΩΝ, but the latter appears to be the true form. There is another gem on which the name of Pergamus is found distinctly inscribed. (R. Rochette, Lettre à M. Schorn, p. 149, 2d ed.; comp. PERGAMUS.)
[P.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890