'Rajatarangini' is a chronicle of kings of Kashmir in Sanskrit. Who was its author?

'Rajatarangini' ('River of Kings'), a Sanskrit chronicle of the kings of Kashmir, was written by Kalhana in about 1148-1149 CE. Bilhana is the tempting choice: he was also a Kashmiri Sanskrit poet, but he wrote 'Vikramankadevacharita', on the Chalukya king Vikramaditya VI. Ramanuja and Madhvacharya were philosophers of the Vedanta schools.