William Duff (1653-1722) (1653–1722) Parents Helen Grant Alexander Duff of Keithmore Children Mary Duff Janet Duff William Duff, 1st Earl Fife Anne Duff Catherine Duff Alexander Duff Henrietta Duff Siblings Alexander Duff of Braco Jean Duff Patrick Duff of Craigston Mary Duff Margaret Duff Elizabeth Duff Partners Helen Gordon