: He is a popular historian, not an academic. I thought that might be the case, or that he might be an academic writing for the masses (which is rare).

: His research has been questioned by a number of non-academics whose opinions I don't find to be very convincing, except for one Gaelic researcher (she doesn't seem to be academic) who said his translations had some errors (she did not provide any examples). On matters of Gaelic translation, I would trust the assessment of someone who seems to know the Irish language (which, based on her Web site, I conclude she does).

: Ellis has also had to recant on a very controversial issue concerning a well-known Irish pedigree, and his book BLOOD ROYAL has been discredited because it was published at a time when the pedigree was shown to be false (mid-1999).

Michael
It might amuse you to know there is a Norton connection with Peter Berresford Ellis. He wrote what is by far the best account of the life and writings of H. Rider Haggard, who is one of Andre's most favorite authors. It is titled "H. Rider Haggard: A Voice From the Infinite" published by Rouledge & Kegan Paul, London, 1978. And according to the rear dust jacket flap, Ellis has written fantasy novels under a pseudonym.
Richard Frahm