In 1815, the Letters were attributed to Richard Glover, the poet of _Leonidas_; and this improbable idea was followed by another, assigning the authorship of the Letters to the Duke of Portland, in 1816. In the same year appeared "Arguments and Facts," to show that John Louis de Lolme, author of the famous Essay on the Constitution of England, was the writer of these anonymous epistles. In 1816, too, appeared Mr. John Taylor's "Junius Identified," advocating the claims of Sir Philip Francis so successfully that the question was generally considered to be settled. Mr. Taylor's opinion was supported by Edward Dubois, Esq., formerly the confidential friend and private secretary of Sir Philip, who, in common with Lady Francis, constantly entertained the conviction that his deceased patron was identical with Junius. In 1817, George Chalmers, F.S.A., advocated the pretensions of Hugh Macaulay Boyd to the authorship of Junius. In 1825, Mr. George Coventry maintained with great ability that Lord George Sackville was Junius; and two writers in America adopted this theory. Thus was the whole question re-opened; and, in 1828, Mr. E. H. Barker, of Thetford, refuted the claims of Lord George Sackville and Sir Philip Francis, and advocated those of Charles Lloyd, private secretary to the Hon. George Grenville.[4] In 1841, Mr. N. W. Simons, of the British Museum, refuted the supposition that Sir Philip Francis was directly or indirectly concerned in the writing; and, in the same year, appeared M. Jaques's review of the controversy, in which he arrived at the conclusion that Lord George Sackville composed the Letters, and that Sir Philip Francis was his amanuensis, thus combining the theory of Mr. Taylor with that of Mr. Coventry. The question was reviewed and revived in a volume published by Mr. Britton, F.S.A., in June 1848, entitled "The Authorship of the Letters of Junius Elucidated;" in which is advocated with great care the opinion that the Letters were, to a certain extent, the joint productions of Lieut.-Colonel Isaac Barré, M.P., Lord Shelburne, (afterwards Marquess of Lansdowne,) and Dunning, Lord Ashburton. Of these three persons the late Sir Francis Baring commissioned Sir Joshua Reynolds, in 1784-5, to paint portraits in one picture, which is regarded as evidence of joint authorship.