William O'Brien
O'Brien disagreed with the establishment of a southern Irish Free State under the Treaty, still believing that Partition of Ireland was too high a price to pay for partial independence. He wrote in 1923, "It is now obvious enough that, had the Irish Council Bill been allowed to pass in 1907, the Partition of Ireland would never have been heard of." Retiring from political life, he contented himself with writing and declined Éamon de Valera's offer to stand for Fianna Fáil in the 1927 general election. He died suddenly on 25 February 1928 while on a visit to London with his wife at the age of 75. His remains rest in Mallow, and one of the principal streets in the town bears his name to this day. His head-bust overlooks the town Council's Chamber Room and one of his finest portraits hangs in University College Cork.
John William Alexander O'Brien
Major General John William Alexander O'Brien, (13 June 1908 – 27 May 1980) was a senior officer in the Australian Army during the Second World War. He was awarded the Distinguished Service Order for his service as commander of the 2/5th Field Regiment during the Syria–Lebanon Campaign. As Deputy Master General of the Ordnance he was involved in the development of the short 25-pounder and the Owen Gun. After the war he was the Australian supply and defence production representative in Washington, DC from 1951 to 1954, and the Mayor of Woollahra from 1971 to 1972 and 1975 to 1976.