Princess Margaret, the Countess of Snowdon, was a member of the English royal family. She was the daughter of King George VI and Queen Elizabeth and the younger sister of Queen Elizabeth II.

The Royal Marriages Act 1772 requires members of the royal family to obtain permission from the head of the monarch to marry.

A picture of Queen Elizabeth, Princess Margaret, Princess Alexandra ... by Paolo Roversi and William and Kate’s engagement and wedding photographs. This is the first exhibition to open in ...