Premise: Lady Pamela Carmen Louise Hicks ("née" Mountbatten; born 19 April 1929) is a British aristocrat. She is the younger daughter of the 1st Earl Mountbatten of Burma by his wife, Edwina Mountbatten. Through her father, Lady Pamela is a first cousin of Prince Philip, Duke of Edinburgh and a great niece of the last Empress of Russia, Alexandra Feodorovna.
Hypothesis: Hicks is the oldest child