Robert Duff of Logie and Fetteresso (1721-1787) (1721–1787) Parents Mary Urquhart Patrick Duff of Craigston Children Jane Duff Siblings Mary Duff Archibald Duff Adam Duff Elizabeth Duff James Duff Francis Duff Thomas Duff Margaret Duff Jean Duff William Duff Alexander Duff, 1st of Hatton Patrick Duff Helen Duff John Duff Partners Lady Helen Duff