Thomas St Lawrence, 1st Earl of Howth
Thomas St Lawrence, 1st Earl of Howth( 10 May 1730- 29 September 1801) was Anglo- Irish peer and lawyer.
Howth was the son of William St Lawrence, 14th Baron Howth and Lucy Gorges, daughter of General Richard Gorges and his wife Nichola Sophia Hamilton.
He was educated at Trinity College, Dublin.
On 4 April 1748, he succeeded to his father's barony.
In 1776, the Crown granted Howth a yearly pension of £ 500 in consideration of his own and his ancestors' services.
He was a trained barrister, and was elected as a Bencher of King's Inns in Dublin in 1767.
On 3 September that same year he was created Earl of Howth and Viscount St Lawrence, both in the Peerage of Ireland.
He was made a member of the Privy Council of Ireland in 1768.
He married Isabella King, daughter of Sir Henry King, 3rd Baronet and Isabella Wingfield, daughter of Edward Wingfield and sister of Richard, 1st Viscount Powerscourt on 17 November 1750.
Together they had six children.
His eldest son predeceased him, and he was succeeded by his second son, William.
Thomas St Lawrence, 13th Baron Howth
Thomas St Lawrence, 13th Baron Howth( 1659 – 1727) was an Irish nobleman of the later Stuart and early Georgian era.
He was born in 1659, eldest son of William St Lawrence, 12th Baron Howth, and Elizabeth Fitzwilliam.
He was only twelve when his father died, and during his minority he was under the guardianship of Thomas Butler, 6th Earl of Ossory, who had been his father's closest friend.
Nicholas St Lawrence, 4th Baron Howth
Nicholas St Lawrence, 4th Baron Howth( c. 1460 – 1526) was a leading Irish soldier and statesman of the early Tudor period, who held the office of Lord Chancellor of Ireland.
James Hay, 15th Earl of Erroll
James Hay, 15th Earl of Erroll (20 April 1726 – 3 July 1778) was a Scottish nobleman and the son of William Boyd, 4th Earl of Kilmarnock.
William Annesley, 3rd Earl Annesley
William Richard Annesley, 3rd Earl Annesley( 16 July 1772 – 25 August 1838) was an Anglo- Irish noble and British Member of Parliament.
Lord Annesley was the eldest son of Richard Annesley, 2nd Earl Annesley and Anne Lambert.
He married Lady Isabella St. Lawrence, a daughter of William St. Lawrence, 2nd Earl of Howth on 19 May 1803 and with her had one daughter: Lord Annesley divorced Lady Isabella St. Lawrene by Act of Parliament in 1821.
He then married Priscilla Cecilia Moore on 15 July 1828, with her having six sons:
He was High Sheriff of Down for 1822.
William St Lawrence, 14th Baron Howth
William St Lawrence, 14th Baron Howth( 1688- 1748) was an Irish peer and politician, who enjoyed the friendship of Jonathan Swift.
Thomas St Lawrence, 3rd Earl of Howth
Thomas St Lawrence, 3rd Earl of Howth KP (16 August 1803 – 4 February 1874) was an Irish peer, styled Viscount St Lawrence until 1822.
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.
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.
John Manners, 4th Earl of Rutland
John Manners, 4th Earl of Rutland( c. 1559 – 24 February 1588) was the son of Henry Manners, 2nd Earl of Rutland, and Lady Margaret Neville, daughter of Ralph Neville, 4th Earl of Westmorland.
Christopher St George
Christopher St George JP DL( 1812 – 13 November 1877) was an Irish Member of Parliament.
He was son of Arthur French St George by his wife Lady Harriet, daughter of William St Lawrence, 2nd Earl of Howth.
His paternal grandfather, Christopher French, had adopted the name St George to commemorate his descent from the Barons St George.
He was first elected to represent County Galway on 11 August 1847 during the general election of that year.
He was not re-elected at the next general election in 1852.
William St Lawrence, 4th Earl of Howth
William Ulick
Tristram St Lawrence, 4th Earl of Howth KP (25 June 1827 – 9 March 1909) 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.

Question: What is the date of death of William St Lawrence, 4Th Earl Of Howth's father?