esquire vs train-bearer

esquire

noun
  • A gentleman who attends or escorts a lady in public. 

  • A male member of the gentry ranking below a knight. 

  • A lawyer. 

  • A bearing somewhat resembling a gyron, but extending across the field so that the point touches the opposite edge of the escutcheon. 

  • An honorific sometimes placed after a man's name. 

train-bearer

noun
  • An attendant who supports the train of a dignitary. 

How often have the words esquire and train-bearer occurred in a corpus of books? (source: Google Ngram Viewer )