Gulab Singh Jamwal (1792–1857) was the founder of Dogra dynasty and the first Maharaja of the princely state of Jammu and Kashmir, the largest princely state under the British Raj, which was created after the defeat of the Sikh Empire in the First Anglo-Sikh War. During the war, Gulab Singh stayed aloof which helped the British victory, and even became prime minister of the Sikh Empire for the final 38 days of conflict. The Treaty of Amritsar (1846) formalised the sale by the British to Gulab Singh for 7,500,000 Nanakshahee Rupees of all the lands in Kashmir that were ceded to them by the Sikhs by the Treaty of Lahore.