Duke of Edinburgh
Duke of Edinburgh is a British royal title that has been created four times, first in 1726. Its latest creation was by King George VI in 1947 for Philip Mountbatten, just before his marriage to Princess Elizabeth, heir apparent to the throne.
Upon the current holder's death, the title will pass to his eldest surviving son, likely Charles, currently Prince of Wales. Either at that time, if the inheritor is king, or upon its later reversion to the crown, the dukedom of Edinburgh is expected to be newly created and bestowed upon Prince Edward, Earl of Wessex.