Sir Frederick Johnstone, 7th Baronet British politician (1810-1841) (1810–1841) Parents Charlotte Gordon Sir John Johnstone, 6th Baronet Children George Charles Keppel Johnstone Sir Frederick Johnstone, 8th Baronet Siblings Anne Elizabeth Johnstone Charlotte Margaret Johnstone Elizabeth Joanna Weyland John Weyland Partners Lady Louisa Elizabeth Frederica Craven