(Πυλάδης), the engraver of a beautiful gem in the Museum of the King of the Netherlands, representing an eagle, carrying a crown in its beak. It is described by Jonghe (Catal. Mus. Batav. p. 167, n. 4), and more minutely by Visconti (Op. Var. vol. ii. p. 162, n. 21), who, without assigning any reason for his opinion, supposes the inscription ΠΥΛΑΔΟΥ to denote the owner rather than the artist. It has been engraved by Venuti (Collectan. Antiq. Roman. tab. lxxiv. Rom. 1736, folio), and in the work of the Count de Thoms. pl. xiii. n. 5. (Compare R. Rochette, Lettre à M. Schorn, p. 150, 2nd ed.)
[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