Raghudev Narayan
Raghudev's declaration of independence established a Koch Bihar-Koch Hajo conflict that was to result in Koch Bihar losing its independence to the Mughal Empire and Koch Hajo losing its very existence both within three decades. Lakshmi Narayan tried to instigate Parikshit, a son of Raghudev, against his father. The plot was detected and Parikshit managed to escape to Koch Bihar. This led to an armed conflict between the two kingdoms, but which maintained the status quo.
The first major defeat for Raghudev was at the hands of Isa Khan, an Afghan chief from Mymensingh. Raghudev fortified Jangalbari in Mymensigh, but ultimately lost the region south of Rangamati sometime before 1594. After Man Singh became the Subahdar of the Mughal Empire for Bengal in 1594, Isa Khan and others were defeated by the Mughals under Himmat Singh in 1596, forcing Isa Khan to ally with Raghudev. Raghudev, with the help of Isa Khan, attacked Koch Bihar, and Lakshmi Narayan submitted on his own accord to vassalage of the Mughal Empire. Under these circumstances, Raghudev transferred his capital from Barnagar to north Guwahati.
The Koch Bihar-Mughal alliance defeated Raghudev in May 1597, but in the same year Raghudev was able to recoup his losses with the help of Isa Khan. Isa Khan died in 1599, driving Raghudev to seek an alliance with the Ahom kingdom. Raghudev offered his daughter Mangaldoi to Prataap Singha in 1602/1603, and the Ahom king accepted on the possibility of using Raghudev as a buffer against the Mughals. But this did not happen because Raghudev died within a few days after the marriage between Pratap Singha and Mangaldoi.
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