William O'Brien
William O'Brien (2 October 1852 – 25 February 1928) was an Irish nationalist, journalist, agrarian agitator, social revolutionary, politician, party leader, newspaper publisher, author and Member of Parliament (MP) in the House of Commons of the United Kingdom of Great Britain and Ireland. He was particularly associated with the campaigns for land reform in Ireland during the late 19th and early 20th centuries as well as his conciliatory approach to attaining Irish Home Rule.
George O'Brien (painter)
George O'Brien was born at Dromoland Castle County Clare, Ireland in 1821 he was the fifth son of Admiral Robert O'Brien, a direct descendant of Murrough O'Brien, 57th King of Thomond Baron Inchiquin, and of Brian Boroimhe, Monarch of Ireland (?-1014). George O'Brien was a first cousin of William Smith O'Brien (1803–1864) deported to Tasmania for his part in the 1848 'Young Ireland' uprising, and a cousin too of James FitzGerald, at one time Superintendent of the Canterbury Province in New Zealand.