Sir John Sinclair, first baronet (1754–1835) by Sir Henry Raeburn, c. 1794–9 National Gallery of Scotland
Article
Rosalind Mitchison
Sinclair, Sir John, first baronet (1754–1835), agricultural improver, politician, and codifier of ‘useful knowledge’, was born at Thurso Castle, Caithness, on 10 May 1754, the third but only surviving son of George Sinclair (d. 1770) of Ulbster and his wife, Lady Janet Sutherland (1720–1795)...