Sir John Courtenay Throckmorton, 5th Baronet (27 July 1753 – 3 January 1819), was a member of a prominent English family of Roman Catholic dissenters and "its only published author of any significance.

[5] Through his father's marriage to his mother, the Throckmorton family acquired the Manor of Molland in Devon.

[2] Throckmorton went to school in the 1760s with the English Benedictines at St Gregory's in Douai, France before embarking on the grand tour centered on Rome in the 1770s.

[7] After inheriting the baronetcy, Sir John set up home at Buckland House in Berkshire, and his younger brother, George, moved into Weston Underwood.

The painting is a "three-quarter-length portrait" while Sir John is "in brown coat and buff breeches.

Sir John and his wife escaped to Switzerland and, eventually, returned to England by August 1793.