High Quality Content by WIKIPEDIA articles! Henry Scott, 3rd Duke of Buccleuch and 5th Duke of Queensberry KG KT FRSE (2 September 1746 – 11 January 1812) was a Scottish nobleman and long-time friend of the notable Sir Walter Scott. He is the paternal 3rd great-grandfather of HRH Princess Alice, Duchess of Gloucester, and the maternal 4th great-grandfather of HRH Prince William of Gloucester and HRH Prince Richard, Duke of Gloucester. He is also the paternal 5th great-grandfather to Sarah, Duchess of York, and a maternal 6th great-grandfather to HRH Princess Beatrice of York and HRH Princess Eugenie of York.