2. A younger brother of the famous Alcibiades. Pericles, the guardian of the youths, fearing lest Alcibiades might corrupt him, sent him away from his own house and placed him for education with his brother Ariphron; but the latter sent him back at the end of six months, finding it impossible to make anything of him. (Plat. Protag. p. 320.) In another dialogue (Alc. Prim. p. 118, ad fin.; comp. Schol. ad loc.) he is spoken of as quite a madman.