The vaṁśa (vamsa; lineage) of Maharṣi (Maharshi; Great Sage) Udareṇu(Udarenu) is one of the ṛṣivaṁśas (rishivamsa) belonging to the clan of Maharṣi(Maharshi) Viśvāmitra (Viswamitra). Udareṇu (Udarenu) was one of the clan-founder sages of Viśvāmitravaṁśa (Viswamitravamsa; the lineage of Viswamitra).