Madhavrao I
The empire at its peak stretched from Tamil Nadu in the south, to Peshawar (modern-day Khyber Pakhtunkhwa, Pakistan ) in the north, and Bengal in the east. The Northwestern expansion of the Marathas was stopped after the Third Battle of Panipat (1761). However, the Maratha authority in the north was re-established within a decade under Peshwa Madhavrao I.