ascendant vs forebearer

ascendant

noun
  • An ancestor. 

  • Being in control; superiority, or commanding influence; ascendancy. 

  • A royal heir assuming (a place of power). 

  • The horoscope, or that degree of the ecliptic which rises above the horizon at the moment of one's birth; supposed to have a commanding influence on a person's life and fortune. 

  • Ascent; height; elevation. 

adj
  • Surpassing or controlling. 

  • Rising, moving upward. 

forebearer

noun
  • A forebear. 

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