The whole of the state of Meghalaya houses a myriad of tribal communities who have settled in every hook and corner of the region. Apart from Meghalaya , these Koch tribes also are located in other places of Indian subcontinent also , namely , Assam , Tripura etc.
In order to talk to people both within the community as well as with other outsiders, this Koch tribal community use Koch language, which falls in to the famous family of the Tibeto-Burman languages.
The origin of the Koch tribal community has got a rich history behind it. In the 16th century, the Koch tribes had formed a dynasty in the Bihar and also in the near by areas , From there , these Koch tribal community were being thrown away from authority by other people like the Muslims and the Ahom tribes. In order to build a link with the historic past , this Koch tribal community use the title Rajbansi. Rajbansi signifies "men of royal blood," which has been named after their regal ancestors.
There is another story popular amongst the anthropologists of the Indian subcontinent.
Interestingly, after the downfall of the Khen dynasty in the year 1498, the Koch dynasty were established in regions like Assam and Bengal, thus taking the authority of the whole of Kamata kingdom in the year 1515 . This Koch dynasty got the name from this Koch tribe who are affiliated to the Tibeto-Burmese .