Beau Riffenburgh is an author and historian specializing in polar exploration. Under the pseudonym Simon Beaufort, Beau has also co-authored 10 novels with his wife, medieval mystery writer Susanna Gregory. Eight of these are about the Crusader knight Geoffrey Mappestone, but the most recent is a modern police procedural, The Murder House (2013). All told, he has written, edited, or contributed to more than 60 books.He is also an American Football coach and author of books on football history.