One of the great romantic swashbuckling stars of the mid-twentieth century, and the third Tyrone Power of four in a famed acting dynasty reaching back to the eighteenth century. His great-grandfather was the first Tyrone Power (1795-1841), a famed Irish comedian. His father, known to historians as Tyrone Power Sr., but to his contemporaries as either Tyrone Power or Tyrone Power the Younger, was a huge star in the theater (and later in films) in both classical and modern roles. His mother, Patia Riaume (Mrs. Tyrone Power), was also a Shakespearean actress as well as a respected dramatic…