Anne Veronica Tennant, Dowager Baroness Glenconner, LVO is a British peeress and socialite. The daughter of the 5th Earl of Leicester, Lady Glenconner served as a maid of honour at the coronation of Elizabeth II in 1953, and was extra lady-in-waiting to Queen Elizabeth II's sister, Princess Margaret, Countess of Snowdon, from 1971 until the Princess died in 2002. From Wikipedia
