marquess vs seigneur

marquess

noun
  • A title of nobility for a man ranking beneath a duke and above an earl. 

seigneur

noun
  • A feudal lord or noble in French contexts. 

  • The hereditary feudal ruler of Sark. 

  • A landowner in Canada; the holder of a seigneurie. 

  • A hereditary title in the Bailiwick of Jersey. 

How often have the words marquess and seigneur occurred in a corpus of books? (source: Google Ngram Viewer )