given name vs prename

given name

noun
  • A first name, a name chosen for a child, usually by the child's parents; a forename. 

  • Used other than figuratively or idiomatically: see given, name. A person's name. 

prename

noun
  • A first name, a forename 

verb
  • To provide with a first name. 

  • To name in advance. 

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