The ill-fated mountaineer George Mallory's only book was "Boswell the Biographer"?
Robert JephsonBorn 1736
Born in Ireland. In 1762 an army officer, later an Irish MP, playwright and author. He also became a part of the group surrounding Dr. Johnson, David Garrick, Edmund Burke, etc. Among his plays were the tragedies Braganza (1775), The Law of Lombardy (ca. 1779), The Count of Narbonne (1781) and Julia: Or, the Italian Lover (1787). Most of his plays were performed at Drury Lane.
Life with Boswell:
Boswell apparently first met him at Thomas Sheridan's on December 31, 1762, praising his parodies highly.
Most of Jephson's play are available via the AbeBooks.com used books search engine. Search either for Robert Jephson or for the exact titles.