The Plantagenet ancestry: being tables showing over 7,000 of
the ancestors of Elizabeth (daughter of Edward IV and wife of
Henry VII) the heiress of the Plantagenets @ 55

The cited information was published by London, 1928 (Ref: 55) The author/originator was Turton, William Harry.
Turton. 

• Source Notes

  RIN#9992

• References (2)
  • Parent Source: The Plantagenet ancestry: being tables showing over 7,000 of
    the ancestors of Elizabeth (daughter of Edward IV and wife of
    Henry VII) the heiress of the Plantagenets
  • Individual: Berthetrude (or Altrude) de Bourgogne