Mary, Princess Royal and Countess of Harewood was a member of the British Royal Family she was the third child and only daughter of King George V and Queen Mary. The sixth holder of the title of Princess Royal, Mary held the title of princess with the style Highness from birth as the then greatgranddaughter of the British sovereign, and later Her Royal Highness, as the granddaughter and finally daughter of the Sovereign. After her marriage, she held the title of Viscountess Lascelles and, from 1929, Countess of Harewood.
Princess Mary was born at York Cottage on the Sandringham Estate in Norfolk, England. Her parents were the then Duke and Duchess of York. Her father was the eldest surviving son of the then Prince and Princess of Wales.
Source: Wikipedia