Dictionary
Frederick III
1. 1415–93, emperor of the Holy Roman Empire 1452–93; as Frederick IV, king of Germany 1440–93.
2. (“the Wise”) 1463–1525, elector of Saxony 1486–1525: protector of Martin Luther.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.