William O'Brien, 3rd Earl of Inchiquin

William O'Brien, 3rd Baron O'Brien of Burren, 8th Baron & 3rd Earl of Inchiquin PC (1662 – 24 December 1719) was an Irish nobleman.

Life

William O'Brien was the son of William O'Brien, 2nd Earl of Inchiquin and Lady Margaret Boyle. He married his cousin Mary Villiers, daughter of Sir Edward Villiers of Richmond and Frances Howard, the youngest daughter of Theophilus Howard, 2nd Earl of Suffolk and Elizabeth Hume.

Like his father, he was attainted in his absence by the Irish Parliament of King James II in 1689. He returned to Ireland the following year with the Williamite army, serving as a Captain of horse in the regiment of Col. Robert Byerley, and saw action at the Battle of the Boyne in 1690. He was appointed Governor of Kinsale by King William III, in 1693 and signed the declaration and association in defence of the King after the assassination attempt made against him in 1697.

He was Privy Councillor to Queen Anne and King George I, Colonel of Foot in 1703 and Mayor of Kilkenny from 1704 to 1705. He was made Governor of County Clare.

Family

Children of William O'Brien, 3rd Earl of Inchiquin and Mary Villiers:

  • William O'Brien, 4th Earl of Inchiquin (1700 – 18 July 1777)
  • Mary O'Brien, who married Robert FitzGerald, 19th Earl of Kildare, son of Hon. Robert FitzGerald and Mary Clotworthy, on 7 March 1708/9. They had two sons and one daughter.
  • Charles O'Brien Lieut RN
  • James O'Brien (d. 17 December 1771) Married Mary Jephson, daughter of Very Revd William Jephson and Anne Barry. They had three sons and two daughters.
  • Henrietta O'Brien (d. 1730) Married Robert Sandford in August 1717. They had one daughter.

The 3rd Earl of Inchiquin also had a son out of wedlock:

  • Donald O'Brien, was born 1689. He later settled in Co. Waterford where he married Sarah Harrigan. Their sons were James O'Brien (d. 1800) and Andrew O'Brien (d. 1798). The latter settled in Baltinglass where he founded a bleach green for the bleaching of cotton goods produced by the Orrs of Stratford-on-Slaney.

References


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