Sir John Sinclair, 3rd Baronet British politician (1825–1912) (1825–1912) Parents Catherine Camilla Manners Sir George Sinclair, 2nd Baronet Children George Felix Standish Sinclair Clarence Granville Sinclair unknown daughter Sinclair Nina Mary Adelaide Sinclair Amy Camilla Sinclair Siblings Emilie Magdalen Louisa Sinclair Adelaide Mary Wentworth Sinclair Partners Emma Isabella Harriet Standish