Rube vs Wolf

Rube

name

  • A male given name 

  • A diminutive of the male given name Reuben. 

Wolf

name

  • A male given name 

  • The constellation Lupus. 

  • A surname transferred from the given name. 

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