Princess Alice of Greece and Denmark. Maternal aunt of Prince Philip, Duke of Edinburgh. Lady Louise Windsor (born 2003) is the elder child and only daughter of Prince Edward, Earl of Wessex, and Sophie, Countess of Wessex. She is the youngest granddaughter of Queen Elizabeth II and Prince Philip, Duke of Edinburgh. Louise is currently eleventh in the line of succession to succeed her grandmother. Ships , a United States Navy patrol vessel in commission from 1917 to 1919 Louise (steamship), a steamship that operated on the Chesapeake Bay See also Louiseville Princess Louise (disambiguation) Lake Louise (disambiguation) Louis (disambiguation) Louisa (disambiguation)