Henry Pelham-Clinton, 5th Duke of Newcastle
Henry Pelham Fiennes Pelham-Clinton, 5th Duke of Newcastle-under-Lyne, (22 May 1811 – 18 October 1864), styled Earl of Lincoln before 1851, was a British politician.
Francis Pelham-Clinton-Hope, 8th Duke of Newcastle
Henry Francis Hope Pelham- Clinton- Hope, 8th Duke of Newcastle- under- Lyne( 3 February 1866 – 20 April 1941) was an English nobleman.
Charles Gordon-Lennox, 6th Duke of Richmond
Charles Henry Gordon- Lennox, 6th Duke of Richmond, 6th Duke of Lennox, and 1st Duke of Gordon,( 27 February 181827 September 1903), styled Lord Settrington until 1819 and Earl of March between 1819 and 1860, was a British Conservative politician.
Thomas Pelham-Clinton, 3rd Duke of Newcastle
Major- General Thomas Pelham- Clinton, 3rd Duke of Newcastle- under- Lyne( 1 July 1752 – 17 May 1795), known as Lord Thomas Pelham- Clinton until 1779 and as Earl of Lincoln from 1779 to 1794, was a British Army officer and politician who sat in the House of Commons between 1774 and 1794 when he succeeded to the peerage as Duke of Newcastle.
Born on 1 July and christened on 28 July 1752 at St Margaret's, Westminster, Pelham- Clinton was the third but eldest surviving son of Henry Pelham- Clinton, 2nd Duke of Newcastle- under- Lyne, and his wife Lady Catherine Pelham, daughter of Henry Pelham.
His two elder brothers and his younger brother all predeceased their father.
After his education he embarked on a military career.
In April 1774, he accompanied General Henry Lloyd, General Henry Clinton and Major Thomas Carleton as" English observers" of the Second Russo- Turkish War on the Danube( Speelman, 2002).
He served in America during the American War of Independence as Aide- de- Camp to his relative, General Sir Henry Clinton, and was later Aide- de- Camp to the King.
He achieved the rank of Major- General in 1787.
Pelham- Clinton also sat as Member of Parliament for Westminster from 1774 to 1780 and for East Retford from 1781 to 1794 and was Lord Lieutenant of Nottinghamshire from 1794 to 1795.
In February 1794 he succeeded his father in the dukedom.
Pelham- Clinton married
Lady Anna Maria Stanhope, daughter of William Stanhope, 2nd Earl of Harrington, in 1782.
They had two sons and two daughters.
He died, at his country seat at Sunninghill in Berkshire, in May 1795, aged 42, from the effects of an emetic which he had taken for whooping cough, having held the dukedom for only a year.
He was succeeded by his eldest son Henry.
The Duchess of Newcastle upon
Tyne later married General Sir Charles Gregan Craufurd and died in 1834.
Henry Pelham-Clinton, 6th Duke of Newcastle
Henry Pelham Alexander Pelham-Clinton, 6th Duke of Newcastle-under-Lyne (25 January 1834 – 22 February 1879) was an English nobleman, styled Lord Clinton until 1851 and Earl of Lincoln until he inherited the dukedom in 1864.
Pelham-Clinton was the son of Henry Pelham-Clinton, 5th Duke of Newcastle and his wife Lady Susan Hamilton.
He was educated at Eton College and Christ Church, Oxford.
His political career was limited to sitting as Member of Parliament for Newark between 1857 and 1859.
He did not hold any significant political offices in Nottinghamshire, although he was Provincial Grand Master of the Nottinghamshire Freemasons from 1865 to 1877.
Lincoln's taste for gambling resulted in his fleeing the country in 1860 to escape his debts, which had then reached £230,000 (in excess of £26 million in 2017 terms).
In 1861, he married Henrietta Hope, heiress of the wealthy Henry Thomas Hope, in Paris.
As part of the marriage settlement, his debts were paid and an income of £50,000 a year settled on the couple.
Extensive lands in England and Ireland were also added to his family's holdings by inheritance from his father-in-law, although Pelham-Clinton himself never controlled them due to the terms of that testament.
He succeeded his father as Duke of Newcastle in 1864 and had five children with Henrietta:
Edward Pelham-Clinton, 10th Duke of Newcastle
Edward Charles Pelham- Clinton, 10th Duke of Newcastle- under- Lyne( 18 August 1920 – 25 December 1988), known as Edward Pelham- Clinton until November 1988, was an English nobleman for a period of less than two months, inheriting the title from a third cousin.
He had previously served in the Royal Artillery in World War II during which conflict he was mentioned once in dispatches and had a career as a lepidopterist.
Henry Pelham-Clinton, 7th Duke of Newcastle
Henry Pelham Archibald Douglas Pelham- Clinton, 7th Duke of Newcastle- under- Lyne( 28 September 1864 – 30 May 1928), was an English nobleman, styled Earl of Lincoln until 1879.
Henry Pelham-Clinton, 4th Duke of Newcastle
Henry Pelham Fiennes Pelham- Clinton, 4th Duke of Newcastle- under- Lyne( 31 January 1785 – 12 January 1851) was a British nobleman and politician who played a leading part in British politics in the late 1820s and early 1830s.
He was styled Lord Clinton from birth until 1794 and Earl of Lincoln between 1794 and 1795.
Lord John Pelham-Clinton
Lord John Pelham- Clinton( 1755–1781) was a British politician who sat in the House of Commons from 1778 to 1781.
Pelham- Clinton was the third son of Henry Pelham- Clinton, 2nd Duke of Newcastle and was born on 13 September 1755.
He was educated at Eton College from 1763 to 1770, and was admitted at King's College, Cambridge in 1772.
He undertook a Grand Tour from 1776 to 1778.
Pelham- Clinton ’s father, the Duke of Newcastle, had an interest in the seat of East Retford and in 1778 was able to make it available for his son.
Pelham Clinton was returned unopposed at a by-election on 24 February 1778 as Member of Parliament for East Retford, although he was still in Vienna at the time.
He was returned again at the 1780 general election.
In 1780, he was given the position of Gentleman of the bedchamber to the Prince of Wales under the family submission to Lord North, which he had to present himself since his father was unwell.
He does not appear to have spoken in Parliament.
Pelham- Clinton suffered from ill- health and in October 1781 went to Portugal, He died unmarried at Lisbon on 10 November 1781.
Jacobo Fitz-James Stuart, 6th Duke of Liria and Jérica
" Don" Jacobo José María Fitzjames- Stuart y Silva, 6th Duke of Berwick, 6th Duke of Liria, 6th Duke of Jérica, Grandee of Spain( 3 January 1792 – 5 January 1795) was the second surviving son of the 5th Duke of Berwick, briefly inheriting his titles.
He died at age three and two days and passed them onto his younger brother Carlos Miguel Fitz- James Stuart.

Question: When did Henry Pelham-Clinton, 6Th Duke Of Newcastle's father die?
Answer: 18 October 1864