1. 1165-97, king of Germany 1190-97; king of Sicily 1194-97; emperor of the Holy Roman Empire 1191-97 (son of Frederick I).
2. 1421-71, king of England 1422-61, 1470-71 (son of Henry V).
3. ( italics ) a three-part drama (Part 1, 1591-92; Part 2, 1590?; Part 3, 1590?) by Shakespeare.