Acton, John Emerich Edward Dalberg Acton, 1st Baron, 1834-1902, English historian, b. Naples; grandson of Sir John Francis Edward Acton and of Emmerich Joseph, duc de Dalberg. Denied entrance into Cambridge because of his Roman Catholicism, he traveled to Munich, where he studied with Fr. Johann Joseph Ignaz von Döllinger. Acton became (1859) a Liberal member of Parliament and editor of the Rambler, a Roman Catholic monthly. William E. Gladstone, his close friend, nominated him to the peerage (1869), and in 1892, Acton was made lord-in-waiting. Acton's genuine and ardent liberalism gave frequent offense to Roman Catholic authorities. His hatred of arbitrary power and all forms of absolutism led him to oppose the syllabus of errors issued by Pius IX and the promulgation of the dogma of papal infallibility, but he accepted them after their pronouncement rather than risk excommunication.