The Nuttall Encyclopedia
The maharajah of the Sikhs, after taking possession of Lahore, became undisputed master of the Punjab, and imposed on his subjects the monarchical form of government, which was shattered to fragments after his death; he was the possessor of the Koh-i-Nur diamond (1797-1839).
Wood, James, ed. Entry for 'Ranjit Singh'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/r/ranjit-singh.html. Frederick Warne & Co Ltd. London. 1900.