In Greek mythology, Tithonus was Eos' lover.

Eos kidnapped Ganymede and Tithonus to be her lovers. Zeus decided he wanted the beautiful youth Ganymede for himself but to repay Eos he promised to fulfill one wish. She asked for Tithonus to be immortal, but forgot to ask for eternal youth. Tithonus indeed lived forever but grew more and more ancient, eventually turning into a cricket.

Tithonus and Eos had two sons, Memnon and Emathion.