Bio: The son of Dream (Morpheus) and Calliope, he was originally a mortal soul. Was his wife Eurydice is killed moments after they are married, he sets off to rescue her from the Underworld (as per the Greek legend) and in the process becomes immortal.
After angering the Furies, they rip him to shreds leaving him as a living head. He lives out the rest of his life on the island of Naxos, cared for by a small group of monks.
Notes: Not the Orpheus of Greek legend, although the Greek legend is worked into his story and the Sandman mythos.