Renadu is a region in the Indian state of Andhra Pradesh. It is spread over a some portions of the districts of Kadapa and Chittoor. The earliest telugu inscriptions by the king Renati Chola Mutturaju Dhanunjaya Varma, of 575 A.D were found in excavations in this region, please refer to this article for a complete history of Renati Cholas.
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Renadu Wikipedia(Text) CC BY-SA