Lord William James Cavendish-Bentinck (1925-1966) (1925–1966) Parents Clothilde Bruce Quigley Victor Cavendish-Bentinck, 9th Duke of Portland Children Siblings Mary Jane Cavendish-Bentinck Barbara Cavendish-Bentinck Partners Inger Maria Sandra Grantzau-Christensen Eleanor Barbara Muriel Lygon Patricia Constance Margaretta Collins