Sir John Sinclair, 1st Baronet Scottish politician, writer on finance and agriculture (1754–1835) (1754–1835) Parents Janet Sutherland George Sinclair of Ulbster Children Helen Sinclair Alexander Sinclair Janet Colquhoun Julia Sinclair Catherine Sinclair John Sinclair George Sinclair Hannah Sinclair Archibald Sinclair William Sinclair Siblings Helen Sinclair Mary Sinclair Janet Sinclair Partners Diana Macdonald Sarah Maitland
