Captain, A Squadron, 2nd Life Guards, killed in action 6th November 1914 aged 38.
Member of Parliament for Mid-Antrim and the first M.P. to be killed during the Great War. Son of 2nd Baron O'Neill and Lady O'Neill, of Shanes Castle, Antrim, Ireland; husband of Lady Annabel O'Neill (now Lady Annabel Dodds). His son Lieutenant Colonel Shane Edward Robert O'Neill fell in the 1939-1945 War.
Commemorated on a family memorial in st Bertoline Churchyard, Barthomley, Cheshire and also on the Menin Gate Memorial, Ypres, Belgium
His son
Shane Edward Robert, Lieutenant Colonel, 36738, North Irish Horse, Royal Armoured Corps killed 24th October 1944 aged 37. 3rd Baron O'Neill. Son of Capt. the Hon. Arthur Edward Bruce O'Neill, M.P., and Lady Annabel O'Neill, of South Kensington, London; husband of Lady O'Neill, of Shane's Castle, Co. Antrim, Northern Ireland. Lord Lieutenant of Co. Antrim. His father fell in the 1914-1918 War.
Buried in Coriano Ridge War Cemetery, Italy
