The youngest grandson of Mary, the Princess Royal and Countess of Harewood, was David Lascelles, born in 1952. He is the only son of George Lascelles, 7th Earl of Harewood, and his first wife Marion Stein. David Lascelles has two older sisters, Lady Sarah Armstrong-Jones and the Honourable Alexandra Etherington.
Beyond the Royal Titles: Unraveling the Legacy of Mary, Princess Royal and Countess of Harewood