James Cecil, 1st Marquess of Salisbury
James Cecil, 1st Marquess of Salisbury,( 4 September 1748 – 13 June 1823), styled Viscount Cranborne until 1780 and known as The Earl of Salisbury between 1780 and 1789, was a British nobleman and politician.
James Cecil, 6th Earl of Salisbury
James Cecil, 6th Earl of Salisbury (20 October 1713 – 19 September 1780) was a British nobleman, politician, and peer.
He was the son of James Cecil, 5th Earl of Salisbury, and his wife, Anne Cecil, Countess of Salisbury.
He was known for his irregular life as "the Wicked Earl".
He was educated at Westminster School, was High Steward of Hertford, and a Governor of the Foundling Hospital of London.
He married in 1745 Elizabeth (1721–1776), daughter of Edward Keet of Canterbury,
said by a contemporary source to have been a barber and a tourist guide.
However, within a few years he separated from his Countess and lived as a recluse with his mistress, one Mrs. Mary Grave of Baldock, for the remaining 30 years of his life at Quickswood, in the parish of Clothall.
His relationship with her predated his marriage.
C. Price wrote of the liaison in 1771 (Hatfield House archives):
“He lives upstairs … surrounded with old trunks and boxes and scattered books.
Well or ill he never quits his chamber, never sees or converses with any but his old Dame, as he calls her, and his physician, who occasionally visits him.
The servants are old and rusty like the dwelling.”
James Cecil died on 19 September 1780, having had by Elizabeth Keet one son, James Cecil, who succeeded as 7th Earl and 1st Marquess of Salisbury, and two daughters (who died unmarried).
Mrs. Grave received over £50,000 in his Will, besides jewellery, silver and furniture removed from Hatfield.
In addition, the Earl bequeathed £43,000 to his seven children by her, one of whom was James Cecil Grave, rector of Hatfield and Clothall.
The Will was unsuccessfully contested by the 7th Earl of Salisbury, who demolished Quickswood (c. 1790).
Mary Grave died on 2 December 1789 at Baldock.
James FitzGerald, 6th Earl of Desmond
James FitzGerald, 6th Earl of Desmond( d. 1462), called' the Usurper', was the youngest son of Gerald FitzGerald, 3rd Earl of Desmond, and Lady Eleanor, daughter of James Butler, 2nd Earl of Ormond.
Alexander Lindsay, 6th Earl of Balcarres
Alexander Lindsay, 6th Earl of Balcarres and" de jure" 23rd Earl of Crawford( 18 January 175227 March 1825) was the son of James Lindsay, 5th Earl of Balcarres.
He was a general in the British Army.
William of Salisbury, 2nd Earl of Salisbury
William of Salisbury, 2nd Earl of Salisbury( died 1196) was an Anglo- Norman peer.
Though he is generally known as such, his proper title was Earl of Wiltshire, which title was conferred on his father by the Empress Matilda around 1143.
He was also called William FitzPatrick.
He was the son and heir of Patrick of Salisbury, Earl of Wiltshire, styled Earl of Salisbury, and of Ela Talvas.
Margaret Coke, Countess of Leicester
Margaret Coke, Countess of Leicester( 16 June 1700 – 28 February 1775) was a British peer.
She was born Lady Margaret Tufton, the third daughter of Thomas Tufton, 6th Earl of Thanet by his wife Catherine, daughter of Henry Cavendish, 2nd Duke of Newcastle- upon- Tyne.
On 3 July 1718 she was married to Thomas Coke.
Their only child Edward was born on 6 February 1726.
Coke was raised to the peerage as Baron Lovel on 28 May 1728 and his wife became known as the Lady Lovel.
On 30 July 1729 her father Lord Thanet died.
He was also 18th Baron de Clifford, and as he had no surviving male issue this title fell into abeyance between five co-heirs: Margaret, her two elder sisters Catherine( widow of Edward Watson, Viscount Sondes) and Anne( widow of James Cecil, 5th Earl of Salisbury), and her two younger sisters Mary( widow of Anthony Grey, Earl of Harold) and Isabella( wife of Lord Nassau Powlett).
The abeyance was terminated in Margaret's favour on 3 August 1734, and she became 19th Baroness Clifford in her own right.
On 9 May 1744 Lord Lovel was created Earl of Leicester, and his wife became the Countess of Leicester.
Their son Edward( now styled Viscount Coke) died without issue on 31 August 1753, and Lord Leicester died on 20 April 1759.
Lady Leicester died on 28 February 1775, and her barony again fell into abeyance.
The co-heirs were now Edward Southwell( grandson of the eldest sister Catherine); James Cecil, 6th Earl of Salisbury( son of the second sister Anne); the fourth sister Mary( now widow of John Leveson- Gower, 1st Earl Gower); and the fifth sister Isabella,( widow of Sir Francis Blake Delaval) or her daughter Isabella( wife of John Perceval, 3rd Earl of Egmont).
The abeyance was terminated in favour of Edward Southwell on 17 April 1776.
James Cecil, 5th Earl of Salisbury
James Cecil, 5th Earl of Salisbury (8 June 1691 – 9 October 1728), known as Viscount Cranborne from 1691 to 1694, was a British nobleman, politician, and peer.
Salisbury was the son of James Cecil, 4th Earl of Salisbury, and Frances Bennett, and succeeded his father in the earldom in 1694.
From 1712 to 1714 he served as Lord Lieutenant of Hertfordshire.
Lord Salisbury married Lady Anne Tufton, daughter of Thomas Tufton, 6th Earl of Thanet, on 12 February 1709.
They had four children:
Lord Salisbury died in October 1728, aged 37, and was succeeded in his titles by his son James.
Lady Salisbury died in 1756.
The Countess Anne school in Hatfield, founded in 1735, is named after her.
James Cecil, 3rd Earl of Salisbury
James Cecil, 3rd Earl of Salisbury, (1648 – June 1683), known as Viscount Cranborne from 1660 to 1668, was an English nobleman and politician.
Robert Gascoyne-Cecil, 6th Marquess of Salisbury
Robert Edward Peter Gascoyne- Cecil, 6th Marquess of Salisbury, DL( 24 October 1916 – 11 July 2003), styled Viscount Cranborne from 1947 to 1972, was a British landowner and Conservative politician.
Margaret Cecil, Countess of Salisbury
Margaret Cecil, Countess of Salisbury, formerly Lady Margaret Manners( d. c.1682), was the wife of James Cecil, 3rd Earl of Salisbury.
Margaret was a daughter of John Manners, 8th Earl of Rutland, and his wife formerly the Hon Frances Montagu.
Three of Margaret's sisters, Frances, Elizabeth and Dorothy, became countesses.
Another, Anne, became a Viscountess.
She married the future earl on 1 October 1661, seven years before he inherited his grandfather's earldom.
Their children, several of whom died in infancy, were:

Question: Who is James Cecil, 6Th Earl Of Salisbury's paternal grandfather?
Answer: James Cecil, 4th Earl of Salisbury