Standish O'Grady, 1st Viscount Guillamore

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Arms of O'Grady: Per pale gules and sable, three lions passant guardant in pale per pale argent and or

The Rt. Hon. Standish O'Grady, 1st Viscount Guillamore, PC (1766 – 21 April 1840), from Cahir Guillamore, County Limerick, served as Lord Chief Baron of the Exchequer for Ireland for a number of years. He was created Viscount Guillamore by a patent of 28 January 1831.


O'Grady was the eldest son of Darby O'Grady of Mount Prospect, Limerick, and of Mary, daughter of James Smyth of the same county.[a] He was born on 20 January 1766, and, entering Trinity College, Dublin, graduated B.A. in 1784. He was called to the bar, and went on the Munster circuit. He was remarkable for wit as well as learning, and built up a considerable practice.[2] He inherited the Cahir Guillamore estate on the death of his uncle John and was appointed High Sheriff of County Limerick for 1790.[3]

On 10 June 1803, after the murder of Lord Kilwarden, O'Grady became Attorney-General and was sworn of the Privy Council of Ireland.[2][4] He was one of the prosecuting counsel at the trial of Robert Emmet. In October 1805 he was made Lord Chief Baron,[2][4] in succession to Lord Avonmore. He was a sound judge, and David Richard Pigot, his successor as Chief Baron of the Irish Exchequer, expressed the opinion: "O'Grady was the ablest man whose mind I ever saw at work". His witticisms on and off the bench were long remembered.[5] O'Grady was one of the first to suspect the duplicity of the notorious informer Leonard McNally.[6] He clashed with his superiors in 1816 when they brought quo warranto proceedings to challenge his right to appoint his son Waller as a Court clerk.[7]

On his retirement from the bench in 1831, O'Grady was created Viscount Guillamore of Cahir Guillamore and Baron O'Grady of Rockbarton, co. Limerick, in the peerage of Ireland. The O'Grady seat was Cahir Guillamore, close to Lough Gur.[8] He was a handsome man, of a fine presence, and over 6 feet (1.8 m) in stature. He died in Dublin on 20 April 1840.[6]


In 1790 O'Grady married Katharine (died 1853), second daughter of John Thomas Waller of Castletown, co. Limerick, with whom he had several children:[6]


  1. ^ Standish O'Grady was brother to Hayes O'Grady, who became an Admiral in the Royal Navy,[1] and uncle to the Irish antiquarian Standish Hayes O'Grady.[citation needed]
  1. ^ a b c d e f g Burke 1832, p. 555.
  2. ^ a b c O'Donoghue 1895, p. 51.
  3. ^ Burke 1835, p. 606.
  4. ^ a b Courthope 1838, p. 652.
  5. ^ O'Donoghue 1895, p. 51 cites Madden, p. 126
  6. ^ a b c d O'Donoghue 1895, p. 52.
  7. ^ Ball 1926, p. 260.
  8. ^ "CAHIR GUILLAMORE". Landed Estates Database. Retrieved 5 March 2019.
  9. ^ a b Cave 1840, p. 204.



Peerage of Ireland
New creation Viscount Guillamore
1831 – 1840
Succeeded by
Standish O'Grady