Explanation:

 Chamba, one of the oldest Indian states, before it became a district of Himachal Pradesh, was founded in the middle of the 6th century A. D. The rulers were Rajput’s of the solar race. The first Raja was Maruth, a descendent of Kus, the younger son of Rama, and the original capital was at Brahmaur (ancient Bramhapura) in the upper Ravi valley.About A. D. 900, Raja Sahil Varman conquered the lower Ravi valley from the petty hill barons called Ranas and Thakurs, who were the original rulers of the hills, and changed his capital from Brahmaur to Chamba, originally called Champa, named after his daughter Champavati.