Mary Jane vs Mary Joanna

Mary Jane

noun
  • Marijuana. 

  • A type of shoe, usually for a girl, having a rounded toe and a strap with a buckle. 

name
  • A female given name. 

Mary Joanna

noun
  • Marijuana; cannabis. 

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