Alexander Duff (1765-1791) (1765–1791) Parents John Duff Helen Duff Children Margaret Duff Helen Duff Mary Duff Siblings William Duff Bathia Duff Patrick Duff Clementina Duff Katherine Duff John Duff John Duff Andrew Duff James Duff Jean Duff Bathia Duff Anne Duff Garden Duff, 8th of Hatton Partners Mary Leslie