Sher Singh (4 December 1807 – 15 September 1843) was the fourth Maharaja of the Sikh Empire. Elder of the twins of Maharaja Ranjit Singh, founder of the Sikh Empire and Maharani Mehtab Kaur. His reign began on 18 January 1840 following his assault on Lahore which ended the brief regency of Maharani Chand Kaur. He was assassinated on 15 September 1843 by Ajit Singh Sandhawalia.Sher Singh (4 December 1807 – 15 September 1843) was the fourth Maharaja of the Sikh Empire. Elder of the twins of Maharaja Ranjit Singh, founder of the Sikh Empire and Maharani Mehtab Kaur. His reign began on 18 January 1840 following his assault on Lahore which ended the brief regency of Maharani Chand Kaur. He was assassinated on 15 September 1843 by Ajit Singh Sandhawalia.In 1820, Maharaja Ranjit Singh granted him the privilege of being seated in the Darbar and bestowed civil and military honors on him. From 1831 to 1834 he acted as Governor of Kashmir and in 1834 he was a commander in the force that captured Peshawar from the Afghans.