One of the Idaean Dactyls, or according to others, a Mariandynian hero, is called a son of Zeus and Mariandynus. (Schol. ad Apollon. Rhod. i. 1126.) On his expedition against the Amazons, Heracles assisted the Mariandyni against the Bebryces, and during the struggle, Priolaus, the leader of the Mariandyni, fell. During the funeral games Heracles conquered Titias, who is called the father of Barynus, while others call Priolaus and Mariandynus sons of Titias. (Schol. ad Apollon. Rhod. ii. 780, ad Aeschyl. Pers. 933 ; Eustath. ad Dionys. Perieg. 987 ; comp. Lobeck, Aglaoph. p. 1165.)