Matthäus Prätorius
  
  Matthäus Prätorius (, ; ) was a 
Protestant pastor in the 
Duchy of Prussia and later a Roman Catholic priest in the 
Polish–Lithuanian Commonwealth. He is best known as the author of ''Deliciae Prussicae, oder Preussische Schaubühne'' (Prussian Delights, or Prussian Theater), a historical and ethnographic work about 
Old Prussia. By focusing on 
cultural history, this large two-volume work provides an independent and original outlook on Prussian culture and history. The work includes examples of the customs and folklore of the locals which modern researchers particularly value. ''Deliciae Prussicae'' has not been published. In 1998, the 
Lithuanian Institute of History began publishing the full work in original German and Lithuanian translation.
  
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