fatherness vs paternity

fatherness

noun
  • The state or quality of being a father. 

paternity

noun
  • fatherhood, being a father 

  • legal acknowledgement of a man's fatherhood of a child 

  • authorship 

  • parental descent from a father 

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