Frederick I, Elector of Saxony (died 1428)

Frederick I, the Belligerent or the Warlike, a member of the House of Wettin, ruled as Margrave of Meissen from 1407 and Elector of Saxony from 1423 until his death.

April 11 is the 101st day of the year in the Gregorian calendar; 264 days remain until the end of the year.