The Nawabs of Kurnool shifted from Hyderabadi vassalage to that of the British vassalage at the fall of Tipu. The terms were Rs 125000 annually along with 500 horse and 500 foot. In 1810, the Nawab, Alif Khan decided that his sixth and youngest son, Ghulam Rasul Khan will succeed him in place of his eldest, Munawwar Khan, whom the king termed as mentally unfit. A letter was sent confirming the same to George Barlow, the Governor of Madras and the same was accepted. In 1812, when Rasul Khan’s marriage was to take place, Barlow sent a robe of honouw for the marriage along with gifts. But others in the Company believed Alif Khan is bribing the officials to accept Rasul Khan in place of the legal heir Munawwar Khan.
The British didn’t know anything about Muslim Law. What they knew is that the Mughals nominated whoever they wanted. But, following that will make all the kings deciding their descendants. The company institued a fact finding mission where the Collector of Bellary, William Chaplin stated that Munawwar Khan is under house arrest and Alif Khan tried to kill him many times. To muddy the things more, Company sent forces to release him and place him under the care of his uncle in 1813. In the meanwhile Alif Khan died, and another son of his, Muzaffar Khan declared himself the Nawab with the support of a 4000 strong force. Company forces put the fort of Kurnool to seige on 8 Dec 1815, ending in Muzaffar Khan’s surrender in two weeks. Munawwar Khan is placed on throne and ruled for eight years after being succeeded by Rasul Khan on his death in 1823.
The kingdom itself ended in 1839 when the British deposed the Nawab Rasul Khan under the charges of a Wahabi conspiracy in league with Mubaraz-ud-Daulah, a younger brother of the Nizam to raise a flag of rebellion.