Studied at Merchiston Castle School, Edinburgh. King’s College, Cambridge. Bachelor of Arts 1903.
2nd Class Honours, Historical Tripos.
The barony was created for him in 1932. In 1910 he contributed £150,000 to the King Edward VII Welsh National Memorial, which was formed with the aim of eradicating tuberculosis in Wales. After 1929 when he stood down as MP to accept a seat in the Lords, Davies continued to support the official Liberal Party.
He became President of Montgomeryshire Liberal Association and was at odds with his successor as MP, Clement Davies. In 1931 Clement Davies became a Liberal National and continued to support the National Government after the official Liberal Party moved into opposition in 1933. The MP shortly after opposed appeasement and resigned the Liberal National whip.
He was an active supporter of the League of Nations. In 1932 he established the New Commonwealth Society for ‘the promotion of international law and order’, writing several books on the right use of force, notably The Problem of the Twentieth Century (1930), which was translated into German and other languages. His ideas had an impact on the writing of the United Nations Charter, especially with regards to sanctions and the transition of national armies to an international police.
He endowed perhaps the world's first Chair in International Politics, established in honour of Woodrow Wilson in 1919 at the University College of Wales, Aberystwyth, which also hosts the David Davies Memorial Institute of International Studies. The Llandinam Building at Aberystwyth University was named in his honour.
Politically and personally, David now followed the lead set by his grandfather. In 1938 with a general election likely to occur in the near future, Lord Davies put pressure on Clement Davies by persuading the Montgomeryshire executive to seek clarification from their MP on his views regarding the National Government and appeasement.
[28th United Kingdom Parliament. 29th United Kingdom Parliament. 30th United Kingdom Parliament.
31st United Kingdom Parliament. 32nd United Kingdom Parliament. 33rd United Kingdom Parliament.
34th United Kingdom Parliament]
From 1906 to 1929, he was the Liberal Member of Parliament for the Montgomeryshire constituency.
Spouse 1910, Amy, 4thdaughter of Lancelot T. Penman, J.P., of Broadwood Park, Lancliester.