As a man of uncommon wisdom, insight and energy, he became a member of many industrial and constitutional committees. He was chairman of the Consultative Committee on the Welsh Problems of Reconstruction, 1942-46, and was a member of the commission on Reforming the Constitution of Sri Lanka, 1944-45 and of the Local Government Boundary Commission, 1946-49. He received honorary LL.D. degrees of the Universities of Wales, Birmingham and Edinburgh, and was knighted in 1945 when he was in Sri Lanka. In 1955 he served as High Sheriff for his native county, and was president of the Cambrian Archaeological Association, 1956-57.
He was the author of many books, including A social and industrial history of England, 1815-1918 (1920), A short fiscal and financial history of England, 1815-1918 (1921), Studies in Welsh history (1947); The story of Milford (1954), The problem of Wales and other essays (1960); and editor of A survey of economic development with special reference to Great Britain (1933), and The Cardiff region: a survey (1960). Many of his articles appear in history society journals, encyclopaedias, Cambridge History of the British Empire and The Dictionary of Welsh Biography down to 1940. Several of his public addresses have been published, among them The dominion of Ceylon (1949) and the B.B.C. Welsh regional annual lecture entitled Of Welsh nationality and historians (1951).
He m. in 1913Dora Rose Lucile, dau. of Gethin Davies, Principal of the Baptist College, Cardiff and they had one son. He d. 7 Jan 1967 at his home, 11 Celyn Grove, Cyncoed, Cardiff.
Evan David Jones, F.S.A., (1903-87), Aberystwyth