ould fella vs paternity

ould fella

noun

  • father 

  • old man 

paternity

noun

  • parental descent from a father 

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

  • authorship 

  • fatherhood, being a father 

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