Lady Helen Duff (1739-1778) (1739–1778) Parents William Duff, 1st Earl Fife Jean Grant Children Jane Duff Siblings Arthur Duff George Duff James Duff, 2nd Earl Fife Lady Catherine Duff Lady Anne Duff Alexander Duff, 3rd Earl Fife Ludovic Duff Lady Jane Duff Lady Sophia Henrietta Duff William Duff Lady Margaret Duff Patrick Duff Lady Janet Duff Partners Robert Duff of Logie and Fetteresso