John Sinclair of Ulster (1754-1835) Scottish politician, economist and writer on finance and agriculture, born at Thurso Castle, Caithness, Scotland. Author of 'Statistical Account of Scotland' (21 volumes, 1791-1799). Engraving after the portrait by Henry Raeburn showing Sinclair in Highland dress. From 'A Biographical Dictionary of Eminent Scotsmen' by Thomas Thomson (1870). Photo via Newscom