Answer: Kalhana
Notes: Rajatarangini, (Sanskrit: “River of Kings”) historical chronicle of early India, is an epic poem (mahakavya/prabandha), written in Sanskrit verse by the Kashmiri Brahman, or member of the ancient Indian learned class, Kalhana in 1148, in Kashmir (part of the modern state of Jammu and Kashmir, India) that is justifiably considered to be the best and most authentic work of its kind.
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