After the Pal dynasty’’ the royal dominance of the Koch Kings in the west and the Ahoms in the east started growing. During the 14th and 15th century a large part of the western bank of Brahmaputra from Singri in the west and Sootea in the east was ruled by the Bara-Bhuyans. The great saint poet Sri Sri Shankardeva belonged to Bara-Bhuyan family, who settled at Rowta in Darrang District. The Ahom King Suhungmung alias Dihingia Raja occupied the territories of the Bara-Bhuyans on the north in 1505 A.D.The Koch King Biswa Sinha rose to power in 1515 A.D. King Naranarayana who ascended the thorne in about 1540 A. D. divided his Kingdom into two parts. He had given the eastern part to the son of his brother Chilarai and the western part of the kingdom to his own son Lakshminarayana. But soon after their ascension as kings, fatricidal war broke out and Lakshminarayana sought refuge with the Mughals which eventually led to invasion of Kamrup by the Mughals. Balinarayana, one of the brothers of Pariksitnarayana fled away to Gorgaon to seek the help of the Ahom king Swargadew Pratapsingha. Pratapsingha christened Balinarayana as Dharmanarayana, made him the king of Darrang and declared war against the Mughals (1616-1637 A.D.). The Ahoms defeated the mighty Mughals in the Bharali war and re-occupied Darrang from the Mughals. King Dharmanarayana made supreme sacrifice in Singari war in 1638. His son Sundarnarayana ascended the throne and became the king of Darrang.(excluding Tezpur). On the other hand, the Ahoms ruled the eastern part of Darrang ( present Sonitpur) through Kalia Bhomora Borphukan, stationed at Kaliabor. The Ahom Kings resettled many people in the southern part of Brahmaputra.