'white horse') is a minor figure mentioned in the works of Parthenius of Nicaea who attributes the tale to the Hellenistic poet Hermesianax of Colophon.
[1] Word of it spread out however, and reached the ears of the girl's betrothed, who confronted Xanthius about it without mentioning Leucippus by name.
The girl, frightened, tried to escape so she would not be caught together in bed with her brother, but due to the dark Xanthius mistook her for his daughter's unknown seducer and struck her with his dagger, killing her.
[2] For the murder of his father Leucippus was exiled, and went to Thessaly and helped them invade Crete, then he went to Asia Minor where he colonized and founded Magnesia on the Maeander (modern Tekin in Turkey) near Ephesus.
He did so after receiving an oracle that he would be leader for a colony sent out of Pherae by King Admetus, and when he besieged the city, a girl named Leucophryne fell in love with him and betrayed her own town for his sake.