Grosvenor was Doctor to the first and second Duke, while he was at Oxford. He was later editor of Jacksons Oxford Journal.

Dictionary of National Biography

Grosvenor, John (1742-1823), surgeon. Born at Oxford in 1742, son of Stephen Grosvenor, sub-treasurer of Christ Church. He received a medical education at Worcester and the London hospitals. He became anatomical surgeon on Dr Lee’s foundation at Christ Church and was long the most noted practical surgeon in Oxford. He was admitted to the privileges of the university on 24 February 1768. He was especially successful in his treatment of stiff and diseased joints by friction. In 1795, on the death of William Jackson, the University printer, he became chief proprietor and editor of the Oxford Journal. He died on 30 June 1823.