<P> After Nara Narayana died in 1587, the Koch kingdom (ensconced between the Mughal Empire in the west / south and Ahom kingdom in the east) was divided into the western Koch Bihar and the eastern Koch Hajo, ruled by his son Lakshimi Narayan and nephew Raghudev respectively . These two kingdoms were bitter rivals . In due course the Mughals formed an alliance with Lakshmi Narayan and the Nawab of Dhaka, a governor of the Mughals attacked Parikshit Narayan, the son of Raghudev in 1602 at Dhubri, the western most corner of present - day Assam . Following many battles, Parikshit finally accepted defeat and was sent off to Delhi; but his brother, Bali Narayana took refuge with the Ahoms, who were interested in keeping the Koch as a buffer between themselves and the Mughals . The first Mughal - Ahom battle took place in 1615 when the Mughals attacked the Ahoms, then under Pratap Singha . This resulted in a period of Ahom - Mughal conflicts fluctuating fortunes that ended with the Treaty of Asurar Ali in 1639 . The Treaty fixed Barnadi river in the north bank and Asurar Ali in the south bank of the Brahmaputra as the boundary between the Ahoms and the Mughals . This, and the defeat of the Koch king at Pandu in 1641, resulted in a period of Mughal administration in Kamrup (Guwahati and Hajo). </P> <P> Taking advantage of the Mughal war of succession after the fall of the Mughal emperor Shah Jahan in 1658, Pran Narayan of Koch Bihar tried to occupy Koch Hajo, but the Ahoms under Jayadhwaj Singha took Guwahati and pushed him back beyond Dhubri . That the Ahoms reached Dhubri by defeating the Koch king and not the Mughals would form a central tenet in later Ahom diplomacy . Soon after, Aurangzeb occupied the Delhi throne . Mir Jumla II, pursuing Shah Shuja in Bengal, was appointed the Subahdar of Bengal in 1660 and asked to retake Assam . Mir Jumla marched in 1661 and defeated the Ahoms at successive encounters to finally take the Ahom capital Garhgaon . But the daga juddha (guerrilla warfare) of Atan Burhagohain and the rains succeeded in cutting off Mughal communication lines making it impossible for Mir Jumla to consolidate Mughal rule . Unaware of Mir Jumlas difficulties and unnerved by Baduli Phukan's defection, Jayadhwaj Singha sued for peace, an opportunity Mir Jumla seized on . The Treaty of Ghilajharighat (1663) brought an end to Mughal occupation of Garhgaon, but the conditions of this treaty were so severe that the Ahoms were soon resolved to reverse them . </P> <P> After the humiliating defeat inflicted by Mir Jumla the Ahom king Jayadhwaj Singha died in despair . On his deathbed, he exhorted his cousin and successor Chakradhwaj Singha to "remove the spear of humiliation from the bosom of the nation ." There followed a complete overhaul of the Ahom kingdom . People who had dispersed due to Mir Jumla's invasion were rehabilitated in the appropriate khels, food and military productions were increased, new forts were constructed and garrisoned and an experditionary army was organized under a new commander--Lachit Borphukan . Alliances were renewed with the Jaintia and the Kachari kingdoms . During this period Mughal imperial demands were tactfully and diplomatically rebuffed, but when the new faujdar of Guwahati, Firuz Khan, forced the matter in March 1667, the Ahoms were compelled to move . In August 1667 the Ahom army, under Lachit Borphukan and accompanied by Atan Burhagohain, sailed downstream to retake Guwahati . </P> <P> Lachit made Kaliabor, the old seat of the Borphukan, his base camp and advanced toward Guwahati along both banks of the Brahmaputra . On the north bank the Deka Phukan retook Bahbari in early September 1667 . On the south bank, the Nausalia Phukan and others, moving on land and water, captured Kajali, Sonapur, Panikhaiti, and Titamara forts between the Kapili river and Guwahati . The Ahoms then reached Guwahati which was defended by five choukies on each bank of the Brahmaputra (north--Kanai - borosi - bowa, Hillar, Hindurighopa, Patduar and Korai; south--Latasil, Joiduar, Dharamduar, Duarguria and Pandu). With some loss, the Ahoms captured Shah Buruz and Rangamahal forts, a little north of the city . An extended battle was fought for the Itakhuli fort (at the site of the current Deputy Commissioner's bungalow). The Ahoms besieged Joiduar, occupied Pandu, and in spite of a Mughal reinforcement, approached Itakhuli . The grand attack was launched on the night of 4 November 1667, when the Ahoms scaled the walls by ladders and after two months of siege, Itakhuli fell in mid-November 1667 . Most of the defenders were massacred, many surrendered but a few managed to escape . War provisions, treasures and war material fell into Ahom hands . </P>

Who was the ahom king during the battle of saraighat