McCririck (1893–1947) and Nora Muriel Rivett (1896–1975), in 1947 she became the second wife of Charles Thellusson, 8th Baron Rendlesham.
Together they had four children, a son and three daughters: Charles William Brooke Thellusson (later 9th Baron Rendlesham), Sarah Ann, Antonia, and Jaqumine.
Rendlesham rose to prominence thanks to her eye for new fashion trends and her bold editorial choices.
Photographer Helmut Newton called her "thin as a rake and as hard as nails", while journalist Brenda Polan said "She was a monster.
Rendlesham managed the first Yves St. Laurent, Chloé and Karl Lagerfeld shops in London.