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.
William O'Brien (judge)
He was appointed a judge of the High Court of Justice in Ireland in 1882, serving in the Queen's Bench Division until his death in 1899. Even his glowing obituary in the "Law Times" admitted that he had not been highly thought of as a barrister, and it was believed that he owed his appointment to the influence of his friend the Lord Chancellor of Ireland, Sir Edward Sullivan, 1st Baronet, who was almost all-powerful in this sphere. Apart from the Phoenix Park case, his most notable trial was of Patrick Delaney for the attempted murder of O'Brien's colleague James Anthony Lawson. He was a devout Roman Catholic, and notably punctilious in his religious observance. He never married.