Elizabeth Alexandra Mary Windsor, was born on 21st April 1926, during the reign of her paternal grandfather, King George V. Her father, the Duke of York (later King Geroge VI), was the second son of the King. Her mother, the Duchess of York (later Queen Elizabeth, The Queen Mother), was the youngest daughter of Scottish aristocraft the Earl of Strathmore and Kinghorne. She was delivered by caesarean section at her maternal grandfathers London House: 17 Bruton Street, Mayfair. She was baptised by the Angelican Archbishop of York, Cosmo Gordon Lang, in the private chapel of Buckingham Palace on29th May, and named Elizabeth after her mother. She was called Lilibet by her close