Tithonus in Greek and Roman Biography and Mythology

（Τιθωνός), a son of Laomedon, and brother of Priam (Hom. Il. 20.237), or according to others (Serv. ad Virg. Georg. 1.447, 3.48), a brother of Laomedon. Others, again, call him a son of Cephalus and Eos. (Apollod. 3.14.3.) By the prayers of Eos who loved him he obtained from the immortal gods immortality, but not eternal youth, in consequence of which he completely shrunk together in his old age, whence an old decrepit man was proverbially called Tithonus. (Hom. Hymn. in Ven. 219 ; Hes. Theog. 984 ; Apollod. 3.12.4 ; Tzetz. ad Lyc. 18 ; Hor. Carm. 1.28. 8; Ov. Fast. 1.461.) [L.S] - A Dictionary of Greek and Roman biography and mythology, William Smith, Ed.