SOURCE NOTES: Brook, Lindsay L, The Byzantine Ancestry of HRH Prince Charles, Prince of Wales, The Genealogist (APSG), vol 1 no 2 (1981), p3-51. Nypl APA-82-1000 v1.
Previte-Orton, C. W., The Shorter Cambridge Medieval History, Cambridge: University Press, 1952. Chatham 940.1PRE. SOURCE NOTES: date: abt 824 [Ref: Brook p6]