Udāvasu (Udavasu) is the son of Prajāti (Prajati), in the lineage of of Nābhāga (Nabhaga), son of Vaivasvata Manu. Khanitra, the eldest son of Prajāti, appointed Udāvasu the king of the southern country. Kuśāvarta (Kusavarta), belonging to the order of Gautama, was the priest of Udāvasu.