Adam Duncan, 1st Viscount Duncan Royal Navy admiral (1731-1804) (1731–1804) Parents Helen Haldane Alexander Duncan, 3rd of Lundie Children Henry Duncan unknown Duncan Henrietta Duncan Robert Haldane-Duncan, 1st Earl of Camperdown Jane Duncan Mary Tufton Duncan Adamina Duncan Siblings Margaret Duncan Alexander Duncan, 4th of Lundie Katherine Duncan Helen Duncan John Duncan Partners Henrietta Dundas
