Thomas St Lawrence, 3rd Earl of Howth

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Thomas St Lawrence, 3rd Earl of Howth KP (16 August 1803 – 4 February 1874) was an Irish peer, styled Viscount St Lawrence until 1822.

Order of St Patrick Dormant British order of chivalry associated with Ireland

The Most Illustrious Order of Saint Patrick is a dormant British order of chivalry associated with Ireland. The Order was created in 1783 by George III at the request of the then Lord Lieutenant of Ireland, The 3rd Earl Temple. The regular creation of knights of Saint Patrick lasted until 1922, when most of Ireland gained independence as the Irish Free State, a dominion within what was then known as the British Commonwealth of Nations. While the Order technically still exists, no knight of St Patrick has been created since 1936, and the last surviving knight, Prince Henry, Duke of Gloucester, died in 1974. The Queen, however, remains the Sovereign of the Order, and one officer, the Ulster King of Arms, also survives. St Patrick is patron of the order; its motto is Quis separabit?, Latin for "Who will separate [us]?": an allusion to the Vulgate translation of Romans 8:35, "Who shall separate us from the love of Christ?"


He became Earl of Howth in 1822 on the death of his father, William St Lawrence, 2nd Earl of Howth. He was Vice-Admiral of the Coast of Leinster, and was appointed a Knight of the Order of St Patrick on 22 July 1835 and Lord Lieutenant of County Dublin in 1851. [1]

Earl of Howth

Earl of Howth was a title in the Peerage of Ireland. It was created in 1767 for Thomas St Lawrence, 15th Baron Howth, who was elevated to Viscount St Lawrence at the same time, also in the Peerage of Ireland. The St Lawrence family descended from Christopher St Lawrence who was elevated to the Peerage of Ireland as Baron Howth in about 1425. The third and fourth Barons both served as Lord Chancellor of Ireland. The family's origins are thought to go back to Almeric Tristram, a liegeman of the Anglo-Irish knight John de Courcy, who conquered Howth in 1177.

Leinster province in Ireland

Leinster is one of the provinces of Ireland, situated in the east of Ireland. The Leinster province comprises the ancient Kingdoms of Meath, Leinster and Osraige. Following the 12th-century Norman invasion of Ireland, the historic fifths of Leinster and Meath gradually merged, mainly due to the impact of the Pale, which straddled both, thereby forming the present-day province of Leinster. The ancient kingdoms were shired into a number of counties for administrative and judicial purposes. In later centuries, local government legislation has seen further sub-division of the historic counties.

On 9 January 1826, he married Lady Emily, daughter of John de Burgh, 13th Earl of Clanricarde. She died of measles in 1842 in Dublin. On 27 February 1851, he married Henrietta Elizabeth Digby Barfoot (d. 5 March 1884). When he died in the south of France in 1874, he was succeeded by his son by his first marriage, William. [1]

General John Thomas de Burgh, 13th and 1st Earl of Clanricarde PC (Ire), styled The Honourable until 1797, was an Irish nobleman and soldier. He was made a member of the Privy Council of Ireland in 1801.

William Ulick Tristram St Lawrence, 4th Earl of Howth KP was an Irish peer, styled Viscount St Lawrence until 1874. He became Earl of Howth in 1874 on the death of Thomas St Lawrence, 3rd Earl of Howth, and was appointed a Knight of the Order of St Patrick on 8 May 1884. The family titles became defunct as he died without heir.


With Lady Emily de Burgh

Lady Margaret Frances Domville was an Irish aristocrat and a writer. She was also the daughter of the 3rd Earl of Howth and wife of Sir Charles Compton Domville.

With Henriette Elizabeth Digby Barfoot

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  1. 1 2 Cokayne, George Edward, ed. (1892). Complete peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct or dormant (G to K). 4 (1st ed.). London: George Bell & Sons. p. 284.
Honorary titles
Preceded by
The Earl of Meath
Lord Lieutenant of County Dublin
Succeeded by
The Viscount Monck
Peerage of Ireland
Preceded by
William St Lawrence
Earl of Howth
Succeeded by
William St Lawrence