rated, his hatred of ultramontanism was never appeased.
Through middle life Acton divided his time between Aldenham, the Dalberg seat at Herrnsheim on the Rhine, and a house at Prince's Gate in London. In 1879 financial difficulties drove him to sell Herrnsheim and to let Aldenham. He thenceforth spent the winter at Cannes and the autumn at the Arco Villa at Tegernsee, Bavaria, which belonged to his wife's family, and only parts of the spring or summer in London. He read more and wrote less than previously, but his historical writing lost nothing in depth. In the spring of 1877 he gave two lectures at Bridgnorth on the 'History of Freedom in Antiquity and in Christianity.' Two articles in the 'Quarterly' on 'Wolsey and the Divorce of Henry VIII' (Jan. 1877) and on Sir Erskine May's 'Democracy in Europe' (Jan. 1878) and an article on Cross's 'Life of George Eliot' in the 'Nineteenth Century' (March 1885) are exhaustive treatises. In 1886 he helped to set on foot the 'English Historical Review' and contributed to the first number a heavy but pregnant article on 'German Schools of History' (German transl. 1887). In London he saw much of Gladstone and encouraged him in his home rule propaganda. A member of Grillion's and The Club, he was in intimate relations with the best English intellectual society. Honours began to flow in. In 1872 the University at Munich had given him an honorary doctorate, and in 1888 he was made hon. LL.D. of Cambridge, and in 1889 hon. D.C.L. of Oxford. In 1891, on a hint from Gladstone, he was elected an honorary fellow of All Souls. When Gladstone formed his fourth administration in 1892, Acton was appointed a lord-in-waiting. Queen Victoria appreciated his facility of speech in German and his German sympathies, but the position was irksome. In 1895 came the great chance of Acton's life in his capacity of scholar. On Lord Rosebery's recommendation he became regius professor of modern history at Cambridge in succession to Sir John Seeley.
Acton was at once elected an honorary fellow of Trinity College, and took up his residence in Neville's Court. He threw himself with avidity into professorial work. His inaugural lecture on the study of history (11 June 1895) was a striking success; it contained a stimulating account of the development of modern historical methods and closed with an expression of that belief in the supremacy of the moral law in politics which was the dominant strain in Acton. It was published with a bulky appendix of illustrative quotations, illustrating at once the erudition and the weakness of the author, and was translated into German (Berlin, 1897).
Settled at Cambridge, Acton began almost at once to lecture on the 'French Revolution' for the historical tripos. His lectures were largely attended, both by students and by the general public. They were read almost verbatim from manuscript with very rare asides. The dignity of his delivery, his profound sense of the greatness of his task and of the paramount import of moral issues gave them a very impressive quality. Probably his half a dozen years at Cambridge were the happiest time in Acton's life. He loved to think of himself as a Cambridge man at last, and was as proud as a freshman of his rooms in College. He had the pleasure of finding eager pupils among some of the junior students. In 1899 and 1900 much of his energy was absorbed by the project of the 'Cambridge Modern History.' He did not originate it, but he warmly forwarded it, and acted as its first editor, with disastrous results to his health. On the business side he was never strong; and the effort of securing contributors, of directing them and of co-ordinating the work was a greater strain than he could bear. He regarded his editorial position very seriously; and although nothing was published while he was still alive, yet nearly the whole of the first volume and more than half the second were in type some two years before his death. The plan of the whole twelve volumes and the authorship of many even of the later chapters were his decision. Unfortunately Acton contributed nothing himself. The notes prepared for what should have been the first chapter on 'The Legacy of the Middle Ages' were not sufficiently advanced for publication. For all that the history remains a monument to his memory. In 1901 his final illness overtook him; suffering from a paralytic stroke, he withdrew to Tegernsee, and after lingering some months he died there on 19 June 1902. He was buried at Tegernsee.
Acton married on 1 Aug. 1865 the Countess Marie, daughter of Maximilian, Count Arco-Valley of Munich, a member of a distinguished and very ancient Bavarian house. His widow survived him with a son, Richard Maximilian, who succeeded him as second Baron Acton, and three daughters.