Inscription on rocks of Nagajari Khanikar village of Sarupathar, remnants of fortifications, brick structures, monuments, temples, tanks, etc. are evidence of a 9th-century kingdom in the Doyang-Dhansiri valley. The Ahoms were the rulers of the Doyang-Dhansiri valley in the 16th century. Earlier, this part was ruled by the Kacharis. The Kacharis were pushed back towards west of the Karbi Hills. The Ahom King appointed a ruler entitled 'Morongi-Khowa Gohain', an administrative post with the Rank of a Governor/Minister of the Ahom administration. Under Morongi-Khowa Gohain, large number of people from different parts of Ahom kingdom were settled in erstwhile Kachari Kingdom. An interesting aspect of such settlement was that a large number of people from different castes/communities were mixed up together so that there was remote chance of rebellion in such newly acquired territory. Most of the Morongi-Khowa Gohains were appointed from the Burhagohain families although there were few exceptions.