Rajendra Chola III was the son of Rajaraja Chola III

Rajaraja Chola III

Rajaraja Chola III succeeded Kulothunga Chola III on the Chola throne in July 1216 CE. Rajaraja came to the throne of a kingdom much reduced in size as well as influence...

 who came to the Chola throne in 1246 CE. Although his father Rajaraja III was still alive, Rajendra began to take effective control over the administration. Rajendra was a much abler king than his father and tried to stop the rapid decline the Chola kingdom was experiencing due to the incompetence of Rajaraja III.

In the end these efforts were in vain, mainly due to the cunning shift in policy of the Hoysalas, and the struggling kingdom could not withstand the vigour of the Pandyas and was eventually absorbed within the Pandyan Empire.