Kumar Bhaskara Varman was the last and most illustrious of the Varman dynasty

Varman dynasty

The Varman dynasty ruled Kamarupa from 350 to 650. Pushyavarman the first historical ruler of Assam established this dynasty in c350 AD...

 rulers of the Kamarupa Kingdom. He came to power after his brother Supratishthita Varman had died. A bachelor king, he died without an heir. After his death Salasthambha, who established the Mlechchha dynasty

Mlechchha dynasty

The Mlechchha dynasty ruled Kamarupa from their capital at Hadapeshvar in the present-day Tezpur after the fall of the Varman dynasty. The rulers were aboriginals, though their lineage from Narakasura was constructed to accord legitimacy to their rule...

, acquired power in Kamarupa Kingdom.

He is known for his alliance with Harshavardhana against Shashanka

Shashanka

Shashanka is often attributed with creating the first separate political entity in a unified Bengal called Gauda and as such is a major figure in Bengali history. He reigned in 7th century AD, and some historians place his rule approximately between 590 AD and 625 AD. He is the contemporary of...

, the first major ruler of Bengal

Bengal

Bengal is a historical and geographical region in the northeast region of the Indian Subcontinent at the apex of the Bay of Bengal. Today, it is mainly divided between the sovereign land of People's Republic of Bangladesh and the Indian state of West Bengal, although some regions of the previous...

 (Karnasuvarna). Bhaskarvarman issued the Nidhanpur (Sylhet District

Sylhet District

The district of Sylhet consists 6754 mosques, 453 temples, 96 churches and four Buddhist temples.-Places of Interests:-Historical:#The Shrine of Hazrat Shah Jalal#The Shrine of Hazrat Shah Paran#Shahi Eidgah#Gour Govinda Fort#Kean Bridge...

, Bangladesh

Bangladesh

Bangladesh , officially the People's Republic of Bangladesh is a sovereign state located in South Asia. It is bordered by India on all sides except for a small border with Burma to the far southeast and by the Bay of Bengal to the south...

) copper plate grant from his camp at Karnasuvarna and it moved into his control for a short period. The Chinese traveler, Xuanzang

Xuanzang

Xuanzang was a famous Chinese Buddhist monk, scholar, traveler, and translator who described the interaction between China and India in the early Tang period...

, visited him in his court and left an informative account of the kingdom, noting the King's patronization of Buddhism though he was not a Buddhist.