During the age of Sisyphus, Dawn had several mortal lovers including Tithonus. When Dawn asked Zeus to make Tithonus immortal she forgot to ask for eternal youth too. He indeed lived forever, but eventually he couldn't move or even lift his limbs, so Dawn laid him in a room with shining doors to comfort him. There he babbled endlessly and they say he turned into a cicada, eternally living, but begging for death to overcome him.
Dawn bore Tithonus two sons, Memnon and Emathion. Serendipitously, Memnon was killed by Achilles in the Trojan War, but Zeus granted Memnon immortality at the request of Dawn, while Achilles was killed by the god Apollo when he rushed towards the gates of Troy.
