George Talbot, 4th Earl of Shrewsbury
Sir George Talbot, 4th Earl of Shrewsbury, 4th Earl of Waterford, 10th Baron Talbot, KG, KB, PC( c. 1468 – 26 July 1538) was the son of John Talbot, 3rd Earl of Shrewsbury, and Lady Catherine Stafford, daughter of the 1st Duke of Buckingham.
He also held the subsidiary titles of 13th Baron Strange of Blackmere and 9th Baron Furnivall.
John Mordaunt, Viscount Mordaunt
John Mordaunt, Viscount Mordaunt (c. 1681 – 5 April 1710) was an English soldier and politician.
The eldest son of Charles Mordaunt, 3rd Earl of Peterborough, he was educated at Christ Church, Oxford after travelling in Holland in 1699.
He was elected, as a Whig Member of Parliament for Chippenham in 1701 despite a petition alleging, among other things, he was still a minor.
(That year he was aged about 20.)
He was a political ally of his father's and managed the attempt to impeach Lord Somers in the House of Commons in the same year.
At the General Election of 1705 he vacated his seat to unsuccessfully contest Nottinghamshire but returned to Chippenham later that year in a by-election caused by the death of a newly returned Whig member, and sat until 1708.
He saw distinguished service during the War of the Spanish Succession.
As a captain, he led the forlorn hope of the 1st Foot Guards at the Battle of Schellenberg in 1704, and was one of the few to survive that bloody assault.
Shortly thereafter, he helped lead another furious assault at the Battle of Blenheim and lost his left arm.
On 25 August 1704, he was made colonel of the Scots Fuzileers in place of Brigadier Archibald Rowe, killed in the attack at Blenheim.
On 26 June 1706 he exchanged regiments with Sampson de Lalo, then colonel of the 28th regiment, but resumed the colonelcy of the Scots Fuzileers in 1709 when de Lalo was killed at the Battle of Malplaquet.
In 1708, he married Lady Frances Powlett (d. 1715), daughter of Charles Paulet, 2nd Duke of Bolton.
They had two sons:
He died of smallpox on 5 April 1710, and was buried at Turvey on 13 April.
Charles Mordaunt, 3rd Earl of Peterborough
Charles Mordaunt, 3rd Earl of Peterborough and 1st Earl of Monmouth,( 1658 – 25 October 1735) was an English nobleman and military leader.
He was the son of John Mordaunt, 1st Viscount Mordaunt, and his wife Elizabeth, the daughter and sole heiress of Thomas Carey, the second son of Robert Carey, 1st Earl of Monmouth.
Mordaunt's father, John Mordaunt, was created Viscount Mordaunt of Avalon and Baron Mordaunt of Reigate, Surrey, in 1659.
Charles Mordaunt, 4th Earl of Peterborough
Charles Mordaunt, 4th Earl of Peterborough, 2nd Earl of Monmouth (1708 – 1 August 1779) was a British peer and Member of Parliament, styled Viscount Mordaunt from 1710 to 1735.
He was the son of John Mordaunt, Viscount Mordaunt and Lady Frances Powlett, and succeeded his grandfather, Charles Mordaunt, 3rd Earl of Peterborough in the earldom.
He was succeeded by Charles Mordaunt, 5th Earl of Peterborough.
William Cuffe, 4th Earl of Desart
William Ulick O'Connor Cuffe, 4th Earl of Desart( 10 July 1845 – 15 September 1898).
He succeeded to the title of 6th Baron Desart, 4th Viscount Desart and 4th Earl of Desart on the 1 April 1865
Thomas Osbert Mordaunt
Thomas Osbert Mordaunt( 1730 – 1809) was a British officer and poet, known for" The Call".
Mordaunt was the son of Charles Mordaunt, also a soldier.
His grandfather, Brigadier- General Lewis Mordaunt, was the younger brother of Charles Mordaunt, 3rd Earl of Peterborough, sometime First Lord of the Treasury.
Mordaunt is best remembered for his oft- quoted poem" The Call", written during the Seven Years' War of 1756 – 1763:
For many years, the poem was incorrectly attributed to Mordaunt's contemporary, Sir Walter Scott.
Scott had merely quoted a stanza of the poem at the beginning of Chapter 34 of his novel" Old Mortality".
" One Crowded Hour", Tim Bowden's biography about the Australian combat cameraman Neil Davis, takes it s title from a phrase used in" The Call".
John Chambers (bishop)
John Chambers( died 1556) was an English Benedictine, the last Abbot of Peterborough and first Bishop of Peterborough.
Francis Douglas, 8th Earl of Wemyss
Francis Wemyss Charteris Douglas, 8th Earl of Wemyss, 4th Earl of March( 15 April 177228 June 1853), known as the Earl of March from 1810 to 1826 and as the Earl of Wemyss and March from 1826 to 1853, was a Scottish peer.
John Mordaunt, 1st Earl of Peterborough
John Mordaunt, 1st Earl of Peterborough( died 1642) was an English peer.
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.

Question: Why did Charles Mordaunt, 4Th Earl Of Peterborough's father die?
Answer: smallpox