Peter Tremayne
Peter Berresford Ellis (born 1943) is a historian, literary biographer, and novelist who has published over 90 books to date either under his own name or his pseudonyms Peter Tremayne and Peter MacAlan. He has also published 95 short stories. Under Peter Tremayne, he is the author of the Sister Fidelma historical mystery series. His work has appeared in 25 languages.