After his death, Ann remarried, firstly to the 2nd Lord Rothermere, a press tycoon and former Tory MP, and later to Ian Fleming, the creator of James Bond, as well as having affairs with the Labour politicians Hugh Gaitskell and Roy Jenkins.
[4] In 1929, O'Neill joined the Gillett Brothers Discount Company as a director.
[5] With the outbreak of World War II, he was granted an emergency commission on 20 September 1939 as a second lieutenant in the North Irish Horse, Royal Armoured Corps.
As a hereditary peer with a Peerage of the United Kingdom, he was able to sit in the House of Lords.
[9] In 1937 he attended the Coronation of George VI at Westminster Abbey and paid homage to him with the other Lords Temporal.