Mary Tufton Duncan (died 1867) (1795–1867) Parents Adam Duncan, 1st Viscount Duncan Henrietta Dundas Children Frederick Henry Fergusson Dundas Henrietta Duncan Dundas Charles Stirling Dundas John Dalrymple Dundas Caroline Stirling Dundas Catherine Mary Dundas George Dundas Anna Maria Dundas Mary Jemima Dundas Henry Robert Duncan Dundas Adam Alexander Duncan Dundas of Dundas Siblings Henry Duncan Robert Haldane-Duncan, 1st Earl of Camperdown unknown Duncan Adamina Duncan Jane Duncan Henrietta Duncan Partners James Dundas of Dundas