Con vs Lulu

Con

name

  • A female given name, a diminutive form of Connie. 

  • A male given name, a diminutive form of Conor or Cornelius. 

Lulu

name

  • A diminutive of the female given names Louisa, Louise, or Lucy 

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