John Grimston, 7th Earl of Verulam
John Duncan Grimston, 7th Earl of Verulam( born 21 April 1951), styled Viscount Grimston between 1960 and 1973, is a British peer.
James Lindsay, 5th Earl of Balcarres
James Lindsay, 5th Earl of Balcarres( 14 November 1691 – 20 February 1768) was a Scottish peer, the son of Colin Lindsay, 3rd Earl of Balcarres and Lady Margaret Campbell, daughter of the Earl of Loudoun.
He became the 5th Earl of Balcarres on 25 July 1736 on the death of his brother Alexander Lindsay, 4th Earl of Balcarres.
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.
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.
James Grimston, 2nd Earl of Verulam
James Walter Grimston, 2nd Earl of Verulam( 20 February 1809 – 27 July 1895), known as Viscount Grimston from 1815 to 1845, was a British peer and Conservative politician.
He was the eldest son of James Walter Grimston, 1st Earl of Verulam, and Lady Charlotte Jenkinson.
He succeeded his father as 2nd Earl of Verulam in November 1845.
In 1860, The Times noted that Grimston was one of only three to hold peerages in all three Kingdoms of England, Scotland and Ireland.
John Hope, 2nd Earl of Hopetoun
John Hope, 2nd Earl of Hopetoun (7 September 1704 – 12 February 1781) was the son of Charles Hope, 1st Earl of Hopetoun and Lady Henrietta Johnstone.
He married on 14 September 1733 to Anne Ogilvy, daughter of James Ogilvy, 5th Earl of Findlater (son of James Ogilvy, 4th Earl of Findlater) and Lady Elizabeth Hay.
He married, secondly, Jane Oliphant (died 16 March 1767), daughter of Robert Oliphant, on 30 October 1762.
He married, thirdly, Lady Elizabeth Leslie (died 10 April 1788), daughter of Alexander Melville, 5th Earl of Leven and Elizabeth Monypenny, on 10 June 1767.
John Hope succeeded to the title of 2nd Earl of Hopetoun in 1742.
In 1747 he was appointed Curator bonis (Trustee in Lunacy) for his half-uncle, the 4th Earl of Annandale and Hartfell.
Ralph Neville, 3rd Earl of Westmorland
Ralph Neville, 3rd Earl of Westmorland( c. 1456 – 6 February 1499) was an English peer.
He was the grandfather of Ralph Neville, 4th Earl of Westmorland.
William de Moravia, 5th Earl of Sutherland
William de Moravia( also known as William Sutherland)( died 1370) was the 5th Earl of Sutherland and chief of Clan Sutherland.
William, 5th Earl of Sutherland was a loyal supporter of David II of Scotland in the wars against England.
William succeeded in taking Roxburgh Castle back from the English.
He married Margaret Bruce in 1345, a daughter of King Robert I of Scotland( Robert the Bruce) and his second wife Elizabeth de Burgh.
With Margaret Bruce, William, Earl of Sutherland only had one son: William, Earl of Sutherland married his second wife, Joanna daughter of Sir John Menteith in 1346.
In 1360, William, 5th Earl of Sutherland granted to his brother Nicholas Sutherland, younger son of the 4th Earl, the barony of Thoroboll.
From this Nicholas Sutherland descended the Sutherland Lairds of Duffus.
William de Moravia, 5th Earl of Sutherland had issue:
James Grimston, 4th Earl of Verulam
James Walter Grimston, 4th Earl of Verulam (17 April 1880 – 29 November 1949) was a British peer, electrical engineer and businessman, sometimes identified with the fringes of the intelligence service.
Verulam was the son of James Grimston, 3rd Earl of Verulam, and Margaret Frances Graham.
He married Lady Violet Constance Maitland Brabazon (1886–1936), younger daughter of Reginald Brabazon, 12th Earl of Meath.
He founded Enfield Cables Ltd and had many business interests in oil and telecommunications, including as a director of British Thomson-Houston.
He reputedly allowed MI6 the use of some of the premises on his estate and was a business associate and personal friend of World War II internee Robert Liversidge.
James Grimston, 5th Earl of Verulam
James Brabazon Grimston, 5th Earl of Verulam (11 October 1910 – 13 October 1960) was a British peer and businessman.
Verulam was the eldest son of James Grimston, 4th Earl of Verulam and Lady Violet Brabazon, younger daughter of the 12th Earl of Meath.
He was educated at Eton and Christ Church, Oxford.
His first job was in Austria after which he was managing director of Enfield Zinc Products.
In 1949 he became chairman of Enfield Rolling Mills, Ltd.
He was mayor of St Albans in 1956; and president of the Cremation Society from 1955 to 1958.
He was also a director of the District Bank and sat on various committees concerned with health, welfare and disability.

Question: Who is the paternal grandfather of James Grimston, 5Th Earl Of Verulam?