Mary Jane Cavendish-Bentinck (1929-2010) (1929–2010) Parents Victor Cavendish-Bentinck, 9th Duke of Portland Clothilde Bruce Quigley Children William James Georgiades David Constantine Georgiades Siblings Barbara Cavendish-Bentinck Lord William James Cavendish-Bentinck Partners Alexander Constantine Georgiades Stephen Richards Graubard