handfast vs walk down the aisle

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. 

walk down the aisle

verb
  • To get married. 

How often have the words handfast and walk down the aisle occurred in a corpus of books? (source: Google Ngram Viewer )