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.
James O'Brien (1695–1771)
James O'Brien was the son of William O'Brien, 3rd Earl of Inchiquin, and his wife, Mary Villiers, daughter of Sir Edward Villiers. He was born in 1701 at Inchiquin, County Clare. Not long after his birth, his family relocated to Charleville, County Cork. He married Mary Jephson, the daughter of the Very Reverend William Jephson, Dean of Kilmore, and Anne Barry.