The Plantagenet Ancestry, Pages: 274 @ p 59, Joscelin de Donjon, d of Frederick Sire de Donjon,
descended from the Counts of Corbeil
The cited information was published by Phillimore & Co., London, 1928 (repro 1993) (Ref: p 59, Joscelin de Donjon, d of Frederick Sire de Donjon,
descended from the Counts of Corbeil) The author/originator was William Harry Turton.
Source Notes
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, with Preface, Lists, Notes and a Complete
Index.