Hylonome is one of the few female centaurs in mythology. She was a beautiful and civilized centauress, who was in love with a young centaur named Cyllarus. He was wounded by a spear in the battle and died in the arms of his beloved. In her despair Hylonome killed herself by throwing herself onto the same spear that had pierced her partner.
Story of Hylonome and Cyllarus
on Zane Stein's site Chiron and Friends