patron vs white knight

patron

noun
  • One who protects or supports; a defender or advocate. 

  • A guardian or intercessor; synonym of patron saint. 

  • An influential, wealthy person who supported an artist, craftsman, a scholar or a noble. 

  • A customer, as of a certain store or restaurant. 

  • A protector of a dependent, especially a master who had freed a slave but still retained some paternal rights. 

  • One who has gift and disposition of a benefice. 

  • A padrone. 

white knight

noun
  • Someone who unnecessarily defends someone else. 

  • An individual or corporation that intends to acquire another company in order to avert a hostile takeover. 

  • A man who defends a woman in debate etc. in an attempt to gain her favour. 

  • A mushroom of species Tricholoma album. 

  • A hero, savior, or righteous individual. 

verb
  • To unnecessarily defend someone, especially in an attempt to gain favour. 

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