Anthony Trollope, author of more than fifty books, including Barchester Towers, The Warden, and The Last Chronicle of Barset, was one of the most prolific and brilliant novelists of the Victorian Era. James Pope-Hennessy, biographer of Queen Mary - and the grandson of an Irish member of Parliament widely believed to have been the prototype fot he hero of Trollope's novel Phineas Finn - has writ…