Anne Caroline Salisbury is the maternal great-grandmother of which wife of King George VI and the mother of Queen Elizabeth II and Princess Margaret, Countess of Snowdon?
Queen Elizabeth The Queen Mother Elizabeth Angela Marguerite Bowes-Lyon (4 August 1900 – 30 March 2002) was the wife of King George VI and the mother of Queen Elizabeth II and Princess Margaret, Countess of Snowdon. She was Queen of the United Kingdom and the Dominions from her husband's accession in 1936 until his death in 1952, after which she was known as Queen Elizabeth The Queen Mother, to avoid confusion with her daughter. She was the last Empress of India.
Princess Olga of Greece and Denmark Princess Olga of Greece and Denmark (Greek: Πριγκίπισσα Όλγα της Ελλάδας και Δανίας , Serbian Cyrillic: "Кнегиња Олга Карађорђевић"; 11 June 1903 – 16 October 1997) was the granddaughter of King George I of Greece and wife of Prince Paul, Prince Regent of the Kingdom of Yugoslavia.