The eldest son of King Edward III, Edward was the prince of Wales. Joining his father as a commander in the campaigns of the Hundred Years War, he established a reputation for valor. However, his rule as the prince of Aquitaine from 1362 to 1372 was a failure, and he returned sick and broken to England and formally surrendered his principality to his father. Though the heir apparent, he never became king, dying one year before his father. Edward was the first in England to be granted what title? Discuss