John Cecil, 6th Earl of Exeter
John Cecil, 6th Earl of Exeter (15 May 1674 – 24 December 1721), known as Lord Burghley from 1678 to 1700, was a British peer and Member of Parliament.
He was the son of John Cecil, 5th Earl of Exeter, and Anne Cavendish.
He sat as Member of Parliament for Rutland from 1695 to 1700, when he succeeded his father in the earldom and entered the House of Lords.
Between 1712 and 1715 he also served as Lord Lieutenant of Rutland.
Exeter married, firstly, Annabella Grey, daughter of Ford Grey, 1st Earl of Tankerville, in 1697.
After her death in 1698 he married, secondly, Elizabeth Brownlow, daughter of Sir John Brownlow, 3rd Baronet, in 1699.
He died in December 1721, and was succeeded in his titles by his eldest son from his second marriage, John.
Lady Exeter died in 1723.
The 6th Earl's second son from his second marriage, Brownlow Cecil, 8th Earl of Exeter, would eventually succeed his brother to the title.
The 6th Earl also had a third son, named William, who was educated with his brother Brownlow 'at St. John's College, Cambridge, and gave great hopes that he would maintain the lustre of the family; "but died too early, to the concern of all who had the happiness of his acquaintance, July 19, 1717."'
He also had a fourth and a fifth son, Francis and Charles. '
The Hon.
Charles Cecil, fifth son of John, sixth earl of Exeter, died young and unmarried, in 1726'.
He also had a daughter, Lady Elizabeth Aislabie.
She was the only daughter of the Earl, and wife of William Aislabie, Esq. of Studley, in Yorkshire, son and heir of John Aislabie, Chancellor of the Exchequor.
She died in 1733, aged 26 years, and was buried at Ripon.
John Cecil, 5th Earl of Exeter
John Cecil, 5th Earl of Exeter( c. 1648 – 29 August 1700), known as Lord Burghley until 1678, was a British peer and Member of Parliament.
He was also known as the Travelling Earl.
John Boyle, 5th Earl of Cork
John Boyle, 5th Earl of Cork and 5th Earl of Orrery, FRS( 13 January 1707 – 16 November 1762) was a writer and a friend of Jonathan Swift, Alexander Pope and Samuel Johnson.
The only son of Charles Boyle, 4th Earl of Orrery, and his wife Lady Elizabeth Cecil( 1687 – 1708), daughter of John Cecil, 5th Earl of Exeter.
He was born at Westminster and attended Christ Church, Oxford.
He published a translation of the letters of Pliny the Younger in 1751, and" Remarks on the Life and Writings of Jonathan Swift" in the same year, and the" Memoirs of Robert Carey, 1st Earl of Monmouth".
His" Letters from Italy" was published in 1774 by J. Duncombe.
John Cecil, 7th Earl of Exeter
John Cecil, 7th Earl of Exeter (c. 1700–1722) was an English peer and member of the House of Lords, styled Lord Burghley from 1721 to 1722.
He inherited the earldom in 1721.
His parents were John Cecil, 6th Earl of Exeter, and Elizabeth Brownlow, daughter of Sir John Brownlow, 3rd Baronet.
He was Keeper of the Westhay Walk, Bailiwick of Cliffe, Rockingham Forest.
He was succeeded by his brother, Brownlow Cecil, 8th Earl of Exeter.
Martin Cecil, 7th Marquess of Exeter
William Martin Alleyne Cecil, 7th Marquess of Exeter( 27 April 1909 – 12 January 1988), known until 1981 as Lord Martin Cecil, was an Anglo- Canadian peer.
John Tuckfield
John Tuckfield( fl. 1550) of the City of Exeter, Devon, was a merchant, Alderman of Exeter, and member of the Company of Merchant Adventurers of Exeter who was Sheriff of Exeter in 1547 and Mayor of Exeter in 1549 – 1550.
Frances Cecil, Countess of Exeter (died 1669)
Frances Cecil, Countess of Exeter( 2 December 1630 – 2 December 1669), formerly Lady Frances Manners, was the first wife of John Cecil, 4th Earl of Exeter.
She was a daughter of John Manners, 8th Earl of Rutland, and his wife, the former Frances Montagu.
The Countess of Exeter's sisters, Margaret, Elizabeth and Dorothy, all became countesses.
Another, Anne, became a Viscountess.
She married the earl on 8 December 1646.
Two of their children survived infancy:
The countess's portrait in miniature was painted in about 1646( the year of her marriage) by Samuel Cooper, and is held by Burghley House.
Some sources give the date of her death as 1660, but the parish register of St Martin's Church, Stamford, shows her to have been buried in December 1669.
A few weeks after her death, the earl married Lady Mary Fane, daughter of Mildmay Fane, 2nd Earl of Westmorland.
John Cecil, 4th Earl of Exeter
John Cecil, 4th Earl of Exeter( 1628 – February 1678), styled Lord Burghley from 1640 to 1643, was an English peer.
He inherited the earldom from his father David Cecil, 3rd Earl of Exeter in 1643.
He was joint Lord Lieutenant of Northamptonshire from 1660 to 1673; after 1673, he held the Lord Lieutenancy for East Northamptonshire while the Earl of Peterborough held the West.
From 1660 to 1676 he was Recorder of Stamford, and in November 1660, was granted the office of Keeper of the West Hay, Bailiwick of Cliffe, Rockingham Forest.
He married Lady Frances Manners( c. 1636 – 1660 or 1669), daughter of John Manners, 8th Earl of Rutland, from which marriage there were two surviving children:
After his first wife's death, he married the widow, Lady Mary Fane, daughter of the Mildmay Fane, 2nd Earl of Westmorland.
Henry Cecil, 1st Marquess of Exeter
Henry Cecil, 1st Marquess of Exeter( 14 March 1754 – 1 May 1804), known as Henry Cecil from 1754 to 1793 and as The Earl of Exeter from 1793 to 1801, was a British politician who sat in the House of Commons between 1774 and 1790 and succeeded to the peerage as Earl of Exeter in 1793.
Gilbert Talbot, 3rd Baron Talbot
Gilbert Talbot, 3rd Baron Talbot( c. 1332–1387) was an English nobleman and soldier.
He was the grandfather of John Talbot, 1st Earl of Shrewsbury.

Question: Who is the paternal grandfather of John Cecil, 7Th Earl Of Exeter?
Answer: John Cecil, 5th Earl of Exeter