The Crown season 6 marked the death of multiple of its characters, and here's how old The Queen Mother was when she died in the show. The series explores the life of Queen Elizabeth II all the way from the start of her reign in 1952 to 2005, spanning five decades. The show has seen a number of deaths along the way, and season 6 of The Crown saw the passing of four characters in total. These include Princess Diana, Dodi Al-Fayed, Princess Margaret, and Queen Elizabeth The Queen Mother.
https://screenrant.com/how-old-the-queen-mother-was-when-she-died-in-the-crown-season-6/