The Vidurs say that they are the descendants of a son who was born
to a slave girl by the sage Vyas, the celebrated compiler of the
Mahabharata, to whom the girl was sent to provide an heir to the
kingdom of Hastinapur. This son was named Vidur and was remarkable
for his great wisdom, being one of the leading characters in the
Mahabharata and giving advice both to the Pandavas and the Kauravas.