Daniel Chatto married which grandchild of King George VI?
Lady Sarah Chatto Lady Sarah Frances Elizabeth Chatto (née Armstrong-Jones; born 1 May 1964) is the only daughter of Princess Margaret, Countess of Snowdon, and the 1st Earl of Snowdon. She is a niece of Queen Elizabeth II and the youngest grandchild of King George VI and Queen Elizabeth The Queen Mother.
Ancestry of Queen Elizabeth II Queen Elizabeth II, present sovereign of the Commonwealth realms, is the daughter of King George VI, the second son of King George V and Queen Mary; and of Lady Elizabeth Bowes-Lyon (later Queen Elizabeth, and, after her daughter's accession to the throne, the Queen Mother), the daughter of Claude Bowes-Lyon, 14th Earl of Strathmore and Kinghorne, and his wife, Cecilia Bowes-Lyon, Countess of Strathmore and Kinghorne.