Sir John Hynde Cotton, Bart.
William Stephens sculp. (see, John Blatchy, William Stephens - a prolific Cambridge engraver, in «The Bookplate Journal,» New Series, Vol. 3, nº 1, March 2005, the Bookplate Society).
According to Frank’s, it is probably the bookplate of Sir John Hynde Cotton, of Madingley Hall, 4th Bart (d.1795), an MP for the county of Cambridge twice.
The son of Sir John Hynde Cotton of Madingley Hall, 3rd Bart (b 1686 - 1752), an MP for the town and county of Cambridge, and his first wife Lettice Crowley (d 08.1718) dau of Sir Ambrose Crowley of Greenwich, Sheriff of London.
Sir John married Anne Parsons (d 1769), dau of Humphrey Parson of Reigate, Lord Mayor of London and Sarah, 3rd dau of Sir Ambrose Crowley).
His son Admiral Sir Charles Cotton, 5th Bart, was to be involved in the Peninsular War In 1808 commanding HMS Hibernia at the head of a naval squadron assisting Lord Arthur Wellesley in the expulsion of the French from Portugal and in the surrender of a Russian squadron in the Tagus.
Madlingley Hall was rented by Queen Victoria in 1860’s as a residence for the Prince of Wales while he was studying in Cambridge and after having been sold by the Cotton family, belongs since 1948 to the University of Cambridge (see, http://www.cont-ed.cam.ac.uk/hall/)
Sources: Church of Landwade the burial place of the Cotton family (in Charles Harold Evelyn White, The East Anglian: Or, Notes and Queries on Subjects Connected with the Counties of Suffolk, Cambridge, Essex and Norfolk, S. Tymms, 1864
Catalogue of British & American Book-plates (ex Libris) Collected by the Late Sir Augustus Wollaston Franks..., Ellis, 1906