John Sewell (1734?–1802; fl. 1754? – 1802)
John Sewell, bookseller in Cornhill (1754?–1802).
A Dictionary of the Printers and Booksellers who were at work in England, Scotland and Ireland from 1726 to 1775, by Henry Plomer et al. (1932)
SEWELL (JOHN), bookseller in London, Cornhill, 1754 (?)–1802. For some years partner with John Brotherton, whom he succeeded in 1775. Nichols says that his shop was the resort of "the first mercantile characters in the City, particularly those trading to the East Indies". He died November 19th, 1802, aged sixty-eight. [Nichols, III. 737, 738.]