High Bailiff vs centgrave

High Bailiff

noun
  • The chief stipendiary magistrate of the Isle of Man, who acts as a judge, including passing sentence, imposing fines, etc. 

centgrave

noun
  • The overseer of a hundred (zent) in medieval France and Germany. 

How often have the words High Bailiff and centgrave occurred in a corpus of books? (source: Google Ngram Viewer )