The Nuttall Encyclopedia
A viceroy of a province in the Mogul empire, applied also to a Mohammedan chief in India, and, spelt Nabob, to a man who has made his wealth in India.
Wood, James, ed. Entry for 'Nawab'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/n/nawab.html. Frederick Warne & Co Ltd. London. 1900.