Кочская династия Ассама и Бенгалии

Indian dynasty of Assam and Bengal

The Koch dynasty (/k//ɒ//tʃ/; 1515–1949) ruled parts of eastern Indian subcontinent in present day Assam and Bengal. Biswa Singha established power in the erstwhile Kamata Kingdom which had emerged from the decaying Kamarupa Kingdom. The dynasty came to power by removing the Baro Bhuyans, who had earlier removed the short lived rule established by Alauddin Hussain Shah. The dynasty split into three among the descendants of Biswa Singha's three sons; two antagonistic branches Koch Bihar and Koch Hajo and a third branch at Khaspur. Koch Bihar aligned with the Mughals and the Koch Hajo branch broke up into various sub branches under the Ahom kingdom. Koch Bihar became a princely state during British rule and was absorbed after Indian independence. The third branch at Khaspur disappeared into the Kachari kingdom. Raikat is a collateral branch of the Koch dynasty that claim descent from the Sisya Singha, the brother of Biswa Singha.

The name Koch denotes a matrilineal ethnic group to which Biswa Singha's mother belonged; and the king as well as most of the population of the kingdom (Koch Bihar) belonged to the Koch community.

After the fall of the Pala dynasty of Kamarupa, the kingdom fractured into different domains in the 12th century. Sandhya, a ruler of Kamarupanagara (present day North Guwahati) moved his capital further west to present day North Bengal in the middle of the 13th century and the domain he ruled over came to be called Kamata kingdom. The buffer region, between the eastern kingdoms and Kamata was the domain of the Baro Bhuyans chieftains. Alauddin Husain Shah of Gaur removed Nilambar of the Khen dynasty in 1498, occupied Kamata and placed his son Danyal Husayn in charge. Within a few years the Baro Bhuyans—led by one Harup Narayan of the Brahmaputra valley—defeated, captured, and executed Daniyal, and the region lapsed into Bhuyan confederate rule.

It was in this context that a number of independent Koch tribes were united under a leader named Hajo, who occupied Rangpur and Kamrup. The Koches, spreading towards the southern plains, were able to ally with other tribal groups. Among various factors, the shift from slash and burn cultivation to settled cultivation and the breakdown of tribal clan based relations are given as factors that contributed to the growth of Koch power. As part of these alliances Hajo's daughter Hira married Hariya Mandal, a member of the Mech tribe from Chiknagram in present day Kokrajhar district, though these ethnic identities are difficult to discern since there were frequent intermarriages. Bisu, born to Hariya and Hira, acquired the political legacy of his grandfather Hajo and established himself as the chief of the eastern branch of the Koches in the Khuntaghat region (present day Kokrajhar district of Assam). It is thought that Bisu fought under the leadership of the Bhuyans as a landlord against the occupation of Kamata kingdom by Alauddin Husain Shah and thus learned their military tactics.

He sought the alliance of tribal chiefs, against the more powerful Baro Bhuyans and began his campaign around 1509. Successively, he defeated the Bhuyans of Ouguri, Jhargaon, Karnapur, Phulaguri, Bijni and Pandunath (Pandu, in Guwahati). He was particularly stretched by the Bhuyan of Karnapur, and could defeat him only by a stratagem during Bihu. In some records Bisu moved his capital from Chikana to Hingulabas (near present day Samuktala) and then finally to Kamatapur (now called Gosanimari) which is just a few miles southeast of the present day Cooch Behar town—but since these movements were recorded much after the events the dates and rulers associated with these movements are not expected to be accurate and these movements represent the gradual movement of Koch power towards the southern plains of the Brahmaputra valley. After subjugating the petty rulers, he announced himself the king of Kamata bounded on the east by Barnadi river and on the west by the Karatoya river in the year 1515. The Koch dynasty in Kamata was one of several tribal formations that developed into statehoods around 15th century in northeast India—Ahom, Chutia, Dimasa, Tripura, Manipur, etc.

At his coronation Bisu adopted Hinduism and the name Biswa Singha. Nevertheless, he retained the Koch identity of his mother discarding the ethnic identity of his father. Later, Brahman pundits created a legend that lord Siva was the father of Biswa Singha to give legitimacy to his rule and conferred on him the status of the Kshatriya varna. According to the legend constructed at the time of coronation, Bisu was son of Siva and his tribe either the Koch or Mech people were Kshatriyas who ran away from the fear of extermination by the Brahman sage Parashurama and took shelter in Western Assam and Northern Bengal and later disguised themselves as Mlechchas. This process of hinduisation was much slower in the lower strata of the society, the king Biswa Singha with his tribal origin claimed Rajbanshi kshatriya status, the lower class Koch took this name after the 18th century.

Biswa Singha's two sons, Naranarayan and Shukladhwaj (Chilarai), the king and the commander in chief of the army respectively, took the kingdom to its zenith. During the reign of Nara Narayan, Koch Behar saw the propagation of eksarana namadharma by Sankardev along with his two disciples Madhavdeva and Damodardev, which helped brought a cultural renaissance to the kingdom. The spread of this new religious movement was initially resisted by the Koch, Mech and Kachari people residing in the Koch Kamata kingdom, for which Nara Narayan made an official order to recognise the different religious practices of the people residing in the kingdom, though by the end of the 18th century, the masses of the Koch population had absorbed considerable Hindu content. Later, Nara Narayan made Raghudev, the son of Chilarai, the governor of Koch Hajo, the eastern portion of the country. After the death of Nara Narayan, Raghudev declared independence. The division of the Kamata kingdom into Koch Bihar and Koch Hajo was permanent.