What sources validate this profile?
See the extract of a summary document attached - “A 4000-Year Old Descent from Antiquity” (May 2001)
https://www.geni.com/documents/view?doc_id=6000000164070185830
The entire PDF is here:
http://erwan.gil.free.fr/modules/freepages/pharaons/ramses_II.pdf
Additionally compiled on Genealogics
https://genealogics.org/getperson.php?personID=I00297812&tree=LEO
Citing
[S00202] Royal Highness, ancestry of the royal child, London, 1982, Moncreiffe of that Ilk, Sir Iain. 48
[S00719] Nos Ancêtres de l'Antiquité Paris, 1991 , Settipani, Christian. VIII