handfast vs take to wife

handfast

verb
  • To betroth by joining hands, in order to allow for cohabitation before the celebration of marriage; to marry provisionally. 

  • To pledge; to bind. 

adj
  • Strong; steadfast. 

take to wife

verb
  • To marry (a specific woman). 

How often have the words handfast and take to wife occurred in a corpus of books? (source: Google Ngram Viewer )