Agnes Duff was born 18 May 1852 to James Duff, 5th Earl of Fife (1814-1879) and Agnes Georgiana Elizabeth Hay (1829-1869) and died 11 January 1925 of unspecified causes. She married George Robert Hay, Viscount Dupplin (1849-1886) 4 October 1871 . She married Herbert Flower (c1852-1881) 5 August 1876 . She married Alfred Cooper (1838-1908) 4 July 1882 .
|Offspring of Agnes Duff and George Robert Hay, Viscount Dupplin (1849-1886)|
|Agnes Blanche Marie Hay (1873-1938)|
|Offspring of Agnes Duff and Alfred Cooper (1838-1908)|
|Stephanie Agnes Cooper (1883-1918)||5 September 1883 Henrietta Street, London, Greater London, England, United Kingdom||9 December 1918||Arthur Francis Levita (1865-1910) Arthur Francis Levita (1865-1910) Maurice Ffoliot Rhys Wingfield (1879-1941)|
|Hermione Mary Louise Cooper (1885-1923)|
|Sybil Mary Cooper (1886)|
|Alfred Duff Cooper, 1st Viscount Norwich (1890-1954)||22 February 1890 Cavendish Square, Greater London, England, United Kingdom||1 January 1954||Diana Olivia Winifred Maud Manners (1892-1986) Diana Olivia Winifred Maud Manners (1892-1986) Susan Mary Jay (1918-2004)|