St Andrew St John, 15th Baron St John of Bletso
St Andrew St John, 15th Baron St John of Bletso( 8 November 1811 — 27 January 1874) was an English peer.
St Andrew St John, 14th Baron St John of Bletso
St Andrew St John, 14th Baron St John of Bletso PC FRS( 22 August 1759 – 15 October 1817) was an English politician who sat in the British House of Commons from 1780 until 1806 when he inherited a peerage.
St John was born at Woodford, Northamptonshire, the son of John St John, 12th Baron St John of Bletso and his wife Susanna Louisa Simond, daughter of Peter Simond.
He was educated by the Rev. John Skynner at Easton near Stamford.
He was then admitted at Lincoln's Inn on 7 May 1773 and at St John's College, Cambridge in 1776.
He was awarded MA in 1779 and was called to the bar on 29 January 1782.
In 1780, St John was elected Member of Parliament for Bedfordshire.
He was a personal friend of Charles James Fox, who supported him throughout his political career.
He was Under Secretary of State for foreign affairs to Lord North for a short time in 1783 but otherwise was generally very active in opposition.
In April 1784, he was unseated on petition in favour of Robert Henley- Ongley, Baron Ongley but reversed the situation when Ongley was unseated on his petition on 19 May 1785.
In 1787, he was one of the managers of the Impeachment of Warren Hastings.
He was Captain of the Bedford Volunteers in 1803.
St Andrew became the 14th Lord St John of Bletsoe when his brother Henry died in 1805, and so resigned his seat in the Commons.
As a peer he accepted a Privy Councillorship in 1806.
Also in 1806 he became Captain of the Gentlemen Pensioners until 1807 and Lt- Colonel of the Bedford Volunteers until 1808.
In 1808 he became a Fellow of the Royal Society and Fellow of the Society of Antiquaries.
St John married Louisa Boughton, 30 years his junior at St George Hanover Square on 16 July 1807.
She was the daughter of Sir Charles William Rouse- Boughton, 9th Baronet and Catherine Pearce Hall.
St John was then nearly 50 and had a long parliamentary career behind him in which he would have been on the opposite side in most cases to Louisa's father.
They lived at Melchbourne Park, Bedfordshire, and had two children, St Andrew and Louisa( born posthumously) who married Norman Macleod 25th Chief.
Lord St John died at the age of 58, leaving Louisa a widow with a young family.
She married again to Mr Serjeant Vaughan on 11 August 1828.
They had a son, Rev. Charles Lyndhurst Vaughan, and a daughter, Edith, who married Sir Charles Isham, 10th Baronet.
John St John, 11th Baron St John of Bletso
John St John, 11th Baron St John of Bletso( died 24 June 1757) was an English peer.
The son of Andrew St John and his wife Jane Blois, daughter of William Blois of Cockfield Hall, Suffolk, he was a nephew of Paulet St John, 8th Baron St John of Bletso and succeeded his brother Rowland St John, 10th Baron St John of Bletso to the family title in 1722.
Lord St John married Elizabeth Crowley( the daughter of Ambrose Crowley) at Greenwich on 6 March 1725.
Their children included: British comedian and actor Alexander Armstrong is a direct descendant of Lord St John.
John St John, 20th Baron St John of Bletso
John Moubray
Russell St John, 20th
Baron St John of Bletso TD( 3 August 1917 – 13 April 1976) was an English peer.
The only son of Moubray St John, 19th Baron St John of Bletso and his wife Evelyn, John St John became the 20th Baron Lord St John of Bletso on the death of his father in 1934.
He was living at a hotel in Dublin and died unmarried in 1976, aged 58, and the title passed to a distant cousin.
John St John, 12th Baron St John of Bletso
John St John of Northwood, 12th Baron St John of Bletso( 15 November 1725 – 20 April 1767) was a British peer.
St John was the eldest son of John St John, 11th Baron St John of Bletso and his wife Elizabeth Crowley, daughter of Sir Ambrose Crowley of Greenwich.
He was educated at Winchester College and at New College, Oxford.
He inherited the title of Baron St John of Bletso on the death of his father in 1757.
St John died at the age of 41 at Nice but was buried at Bletsoe.
St John married Susanne Louise Simond, the daughter of Peter Simond, a wealthy French Huguenot merchant in London.
She brought £ 20,000 to the marriage.
Their eldest son, John Peter died aged just three and St John was succeeded in the barony successively by his second son Henry and his third son St Andrew.
His widow died at Bath, Somerset in 1805 at the age of 80.
Beauchamp St John, 17th Baron St John of Bletso
Beauchamp Moubray St John, 17th Baron St John of Bletso (4 December 1844 – 10 May 1912) was an English peer.
St John was born at Melchbourne, the second son of St Andrew St John, 15th Baron St John of Bletso and his wife Eleanor Hussey.
He served in the Highland Light Infantry until 1867.
He inherited the title Baron St John of Bletso on the death of his brother in 1887 without male heir to become the 17th Baron, and moved to Melchbourne Park, Bedfordshire.
He served as Lord Lieutenant of Bedfordshire from 1905 to 1912.
St John married Helen Charlotte Thornton in 1869 and had a very large family.
His eldest son Henry succeeded to the title, followed by his second son Mowbray.
His daughter Edith married George Lawson Johnston, 1st Baron Luke.
Helen died in 1909 and Beauchamp married, secondly, in 1911, to Ethel Susan Lutley (died 1945), daughter of John H. Lutley of Brockhampton Park, Hereford.
Sir Henry Halford, 2nd Baronet
Sir Henry Halford, 2nd Baronet( 1797 – 22 May 1868) was an English Tory and later Conservative politician who sat in the House of Commons from 1832 to 1857.
Halford was the son of Sir Henry Halford, 1st Baronet and his wife Hon. Elizabeth Barbara St John daughter of John St John, 12th Baron St John of Bletso.
Halford was elected at the 1832 general election as one of the two Members of Parliament( MP) for the newly created Southern division of Leicestershire, and held the seat at five further general elections until he stood down at the 1857 general election.
he faced only one contested election, in 1841, when he was returned with a large majority.
Halford married his cousin Barbara Vaughan, daughter of Sir John Vaughan, his paternal uncle and his wife Louisa Boughton, widow of St Andrew St John, 14th Baron St John of Bletso and daughter of Sir Charles William Rouse- Boughton, 9th Baronet.
They had two sons( both of whom married, but died issueless)
Oliver St John, 3rd Baron St John of Bletso
Oliver St John, 3rd Baron St John of Bletso( c. 1540–1618) was an English politician who sat in the House of Commons from 1588 until 1596 when he inherited the peerage as Baron St John of Bletso.
St John was a son of Oliver St John, 1st Baron St John of Bletso, and Agnes Fisher.
He was High Sheriff of Bedfordshire in 1585.
In 1588 he was elected Member of Parliament for Bedfordshire.
He was High Sheriff of Bedfordshire again in 1589 and was re-elected MP for Bedfordshire in 1593.
He succeeded to the barony on the death of his brother John without male issue on 23 October 1596.
He was Lord Lieutenant of Huntingdonshire from April 1597 until his death.
St John married Dorothy Reid, daughter of Sir John Rede or Reid, of Odington, Gloucestershire.
They had eight sons and seven daughters:
His eldest son Oliver inherited the Barony and became Earl of Bolingbroke.
Of his remaining sons, John and Dudley died young, while the remaining five all became Members of Parliament.
Moubray St John, 19th Baron St John of Bletso
Moubray St Andrew Thornton St John, 19th
Baron St John of Bletso DL JP( 5 November 1877 – 28 October 1934) was an English peer.
Oliver St John, 1st Baron St John of Bletso
Oliver St John of Bletsoe, 1st Baron St John of Bletso( c. 1522 – 21 April 1582) was an English peer.
He was the son of Sir John St John( born 1498) of Bletsoe and Spelsbury and his first wife Margaret, the daughter of Sir William Waldegrave.
His paternal great- great- great- grandfather Sir Oliver St John of Bletsoe, Spelsbury and Lydiard Tregoze( d. 1437) was the husband of Margaret Beauchamp of Bletso, great- great- granddaughter of Roger de Beauchamp, who was summoned to Parliament as Baron Beauchamp of Bletso from 1363 to 1379.
Since then that title had not been assumed, although St John was considered to be the line of heir.
On 13 January 1559 he was raised to the peerage himself as Baron St John of Bletso, in the county of Bedfordshire.

Question: When did St Andrew St John, 14Th Baron St John Of Bletso's father die?
Answer: 20 April 1767