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.
John O'Brien (boxer)
John O'Brien (20 February 1937 – 30 March 1979 (aged 42)) born in Glasgow was a Scottish professional feather/super feather/light/light welterweight boxer of the 1960s and '70s, who won the British Commonwealth featherweight title, and was a challenger for the BBBofC British featherweight title against; Howard Winstone, and Jimmy Revie and European Boxing Union (EBU) featherweight title against Howard Winstone. His professional fighting weight varied from , i.e. featherweight to , i.e. light welterweight.