Merry vs Rube

Merry

name
  • A diminutive of the male given name Meredith. 

  • A surname transferred from the nickname. Originally a nickname for a merry person. 

  • A female given name from English from the adjective, also a diminutive of Mercy. 

Rube

name
  • A male given name 

  • A diminutive of the male given name Reuben. 

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