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Frederick I

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noun
  1. Frederick Barbarossa, 1123?–90, king of Germany 1152–90; king of Italy 1152–90: emperor of the Holy Roman Empire 1152–90.
  2. 1194–1250, king of Sicily 1198–1212: as Frederick II, king of Germany and emperor of the Holy Roman Empire 1215–50.
  3. 1657–1713, king of Prussia 1701–13 (son of Frederick William the Great Elector).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for frederick i

Frederick I

noun
  1. See Frederick Barbarossa
  2. 1657–1713, first king of Prussia (1701–13); son of Frederick William
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012