Answer: Biswa Singha
Notes: Biswa Singha founded the Koch dynasty around 1515, establishing the Kamata Kingdom. The dynasty ruled parts of Assam and Bengal and later split into Koch Bihar, Koch Hajo, and Khaspur branches. Biswa Singha united various tribes and claimed Rajbanshi Kshatriya status through Hinduization. The dynasty existed until 1949, playing a role in regional politics and culture.
