Title borne by eldest son of the English monarch; first conferred in 1301 on eldest son of Edward I. after subjugation of Wales; since 1901 borne by Prince George, formerly Duke of York; entered the navy in 1877, and attained the post of commander in 1890; became heir of the throne on death of his brother, Duke of Clarence; married Princess Mary of Teck, and has by this marriage four sons and a daughter; b . 1865.