Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Jambāvatī
Jambāvatī:A candālī,mother of King Sivi and wife of Vāsudeva of the Kanhāyanagotta.Vāsudeva saw her on his way to the park from Dvāravatī, and,in spite of her birth,married her and made her his chief queen. J.vi.421.