Walter Mitty vs romancer

Walter Mitty

noun
  • An imposter, especially one falsely claiming to have done military service. 

  • A sad or pathetic person given to flights of fancy; a daydreamer. 

romancer

noun
  • A romantic film or television show. 

  • One who romances another; one who attempt to win another's affections via romance. 

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