bar sinister vs illegitimacy

bar sinister

noun
  • The state or characteristic of having been born out of wedlock; illegitimacy; bastardy. 

  • A state or characteristic which is dishonorable or shameful; a stigma. 

  • A bend sinister or baton sinister in a coat of arms. 

illegitimacy

noun
  • The state or condition of being illegitimate 

How often have the words bar sinister and illegitimacy occurred in a corpus of books? (source: Google Ngram Viewer )