Frederick III (21 September 1415 – 19 August 1493) was Holy Roman Emperor from 1452 until his death. He was the fourth king and first emperor of the House of Habsburg . He was the penultimate emperor to be crowned by the pope , and the last to be crowned in Rome .
Frederick III (17 January 1463 – 5 May 1525), also known as Frederick the Wise (German Friedrich der Weise), was Elector of Saxony from 1486 to 1525, who is mostly remembered for the worldly protection of his subject Martin Luther. Frederick was the son of Ernest, Elector of Saxony and his wife Elisabeth, daughter of Albert III, Duke of Bavaria.
Frederick the Fair (German: Friedrich der Schöne) or the Handsome (c. 1289 – 13 January 1330), from the House of Habsburg, was the duke of Austria and Styria from 1308 as well as the anti-king of Germany from 1314 until 1325 and then co-king until his death.