"Royalty for Commoners: The Complete Known Lineage of John of Gaunt, Son of Edward III, King of England, and Queen Philippa" @ p. 25
The cited information was published by 13 Feb 2001 (Ref: p. 25) The author/originator was Stuart, Roderick W..
References (2)
Parent Source:
"Royalty for Commoners: The Complete Known Lineage of John of Gaunt, Son of Edward III, King of England, and Queen Philippa"
Individual:
Pedro II Alfonsez