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.
Kolouei O'Brien
Kolouei O'Brien (1939 – 11 May 2015) was a politician from Tokelau and faipule of Fakaofo. He served as the head of government of Tokelau three times, from February 2000 until February 2001, from February 2003 until February 2004, and from February 2006 until February 2007. Kolouei O'Brien had a master's degree in navigation/yachting. He was born at Fakaofo and died at his home there on 11 May 2015.