Englishman vs grey partridge

Englishman

noun
  • The grey partridge (in opposition to the Frenchman, i.e., the red-legged partridge). 

  • A native or inhabitant of England; a man who is English by ancestry, birth, descent, or naturalisation. 

grey partridge

noun
  • A game bird in the pheasant family, Perdix perdix. 

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