title: Frederick I, Duke of Brunswick-Osterode
text: # Frederick I, Duke of Brunswick-Osterode
  
  Frederick I, Duke of Brunswick-Osterode (c. 1350-1421) was a son of Duke Ernest I and his wife, Adelaide of Everstein-Polle. In 1361, he succeeded his father as Count of Osterode.
  
  He married Adelaide (d. before 1421), a daughter of Bernhard V, Prince of Anhalt-Bernburg, and was the father of Otto II (1396-1452), who succeeded him.
  
  Frederick I, Duke of Brunswick-Osterode House of GuelphBorn: c. 1350 Died: 1421 :
  
  | Preceded byErnest I | Duke of Brunswick-Lüneburg Count of Osterode 1361–1421 | Succeeded byOtto II |
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