Papers of David Davies, the first Baron Davies of Llandinam (1880-1944), along with papers of other members of the family, David Davies (1818-1890), Edward Davies (1852–1898), Revd. Gwilym Davies (1879-1955), Gwendoline Elizabeth Davies (1882-1951) and Mary Sidney Davies (1884-1963). They reflect Lord Davies varied business and political interests and include the records of the New Commonwealth Society, papers related to the League of Nations Union Welsh National Council, the first and second world wars, the Temple of Peace, the King Edward VII Welsh National Memorial Institute, the National Library of Wales, the Royal Welsh Agricultural Show, University of Wales Aberystwyth, Davies’s coal and railway interests, international affairs, drafts and copies of Davies’s publications mainly on international relations, papers of the David Davies Memorial Institute and papers related to Gregynog Press.