Rajballabh Sen is perhaps most notorious for his association with
Mir Jafar,
Ghaseti Begum, and the
British East India Company. He supported Ghaseti Begum in her power struggle to enthrone Shaukat Jang, the son of Ghaseti's second sister Maimuna Begum. Siraj grew suspicious of Sen, then diwan of Dhaka, and believed that Shaukat Jang was the illegitimate son of Maimuna and Sen. He also believed Sen had embezzled a large sum of money. Displeased, Siraj sent his troops to Rajnagar in hopes of arresting members of his family and seizing his questionably accumulated property. However, by then, Krishnadas, Sen's son, had already escaped to
Calcutta with his wealth, and gained the asylum of its governor,
Roger Drake. After the British ultimately emerged victorious in the
Battle of Plassey in 1757, Sen grew closer to them and started conspiring with them. Sen's partnership with the British, however, was short-lived. In July 1763,
Mir Qasim, who had succeeded Mir Jafar as the Nawab of Bengal, suspected him of treachery; at his orders, Sen and his eldest son were executed by drowning. ==Notes==