In May 1770, he and the King of Tamar attempted to subjugate Lakra Kol (Ho) of Kolhan but failed and hundreds of their men were killed.
The southern part of the Nagvanshi kingdom was in constant trouble due to pillaging by Lakra Kols.
[3][4] After the Battle of Buxar, East India Company got rights to collect taxes from Bihar and Bengal territory.
Later Dripnath Shah decided to become a vassal of the East India Company; when he came to know about Captain Camac's activity who was successful in subjugating the Chero ruler of Palamu.
In 1771, after the fall of the Palamu Forts, Dripnath Shah met Captain Camac and wished to become a vassal of the East India Company and agreed to six thousand rupees as tribute and six thousand nazrana annually, the same amount of tax that was paid to Mughal.
[3] Due to high amount of taxes Mukund Singh of Ramgarh was not ready to accept suzerainty of East India company.
Capitain Jacob declared Tej Singh Thakurai as King of Ramgarh and gave him leadership to lead the battle.
The king of Tori, who was a vassal of Nagvanshi, sided with the Marathas and drove away Dripnath Shah's men.
The jurisdiction of captain Champell was spread in the area of Chatra, Palamu, Kunda, Kharagdiha, Panchet and Sherghati.