Thomas Bruce, 2nd Earl of Ailesbury
Thomas Bruce, 2nd Earl of Ailesbury( later styled Aylesbury) and 3rd Earl of Elgin( 1656 – 16 December 1741) was an English politician and memoirist.
He was the son of Robert Bruce, 2nd Earl of Elgin, and Lady Diana Grey.
His maternal grandparents were Henry Grey, 1st Earl of Stamford, and Lady Anne Cecil, daughter of William Cecil, 2nd Earl of Exeter.
His" Memoirs", which were not published until long after his death, are a valuable source for English history in the last quarter of the seventeenth century.
Edmund, 2nd Earl of Kent
Edmund, 2nd Earl of Kent( c. 1326 – 5 October 1331) was a member of the English royal family.
Anthony Grey, 9th Earl of Kent
Rev. Anthony Grey (1557 – 9 November 1643) was Earl of Kent from 1639 to his death.
He was a son of George Gray by Margery, daughter of Gerard Salvaine of Croxdale.
George was the apparently only son of Anthony Gray of Brancepeth, a son of George Grey, 2nd Earl of Kent, by his second wife Katherine (or Katharine or Catherine), daughter of William Herbert, 1st Earl of Pembroke.
In 1639, Gray succeeded his childless second cousin once removed Henry Grey, 8th Earl of Kent.
Henry was a great-grandson of Henry Grey, 4th Earl of Kent, another son of the 2nd Earl.
A priest in the Church of England, Gray was rector at Aston Flamville and later Burbage.
Henry Grey, 8th Earl of Kent
Henry Grey, 8th Earl of Kent( c. 1583 – 21 November 1639) of Wrest Park, Bedfordshire was Earl of Kent from 1623 to his death.
He was born the only son of Charles Grey, 7th Earl of Kent and his wife Susan Cotton and educated at Trinity College, Cambridge.
On 16 November 1601, at St Martin- in- the- Fields, Henry married Elizabeth Talbot( 1582 – 7 December 1651), a daughter of Gilbert Talbot, 7th Earl of Shrewsbury and Mary Cavendish.
There were no known children from this marriage.
He was knighted in 1603.
He was elected Member of Parliament for Tavistock in 1601 and knight of the shire for Bedfordshire in 1614.
He served as Lord Lieutenant of Bedfordshire from 1621 to 1627 and again from 1629 to his death.
From 1621 to 1623, Henry held the title jointly with his father Charles Grey, 7th Earl of Kent.
From 1625 to 1627 and again from 1629 to his death, he held the title jointly with Thomas Wentworth, 1st Earl of Cleveland.
He died childless and his primary title as Earl of Kent was inherited by his closest male- line relative, Anthony Grey, 9th Earl of Kent, the Rector of Burbage, Leicestershire.
Anthony was a second cousin of his father as they were both great- grandsons of George Grey, 2nd Earl of Kent.
His title of Baron Grey de Ruthyn was awarded by the House of Lords to his nephew Charles Longueville, 12th Baron Grey de Ruthyn, son of his sister Susan.
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.
Elen ferch Llywelyn (the Elder)
Elen ferch Llywelyn( c. 1218 – 1253) was the daughter of Llywelyn the Great of Gwynedd in North Wales by Joan, Lady of Wales, the natural daughter of King John of England.
Elen married John of Scotland, 9th Earl of Huntingdon, in about 1222.
He died aged thirty in 1237, and she was forced by King Henry III( her mother's half- brother) to marry Sir Robert de Quincy.
Their daughter, Hawise, married Baldwin Wake, Lord Wake of Liddell.
Hawise and Baldwin ’s granddaughter, Margaret Wake, was the mother of Joan of Kent. Joan of Kent was the wife of Edward, the Black Prince and the mother of Richard II of England, who was deposed and died without heirs.
The blood of Llywelyn the Great eventually came into the English royal family through Joan of Kent's earlier marriage to Thomas Holland, 1st Earl of Kent.
By their eldest son, Thomas Holland, 2nd Earl of Kent, two of his six daughters were ancestresses; By Thomas, 2nd Earl of Kent's other daughter, Eleanor Holland, Countess of Salisbury, Elen ferch Llywelyn was an ancestress of Queen consort Anne Neville, consort of Richard III and daughter of Warwick, the Kingmaker, as well as Queen consort Catherine Parr, the last wife of Henry VIII.
George Grey, 2nd Earl of Kent
George Grey, 2nd Earl of Kent (1454 – 25 December 1505) was the son of Edmund Grey, 1st Earl of Kent and Lady Katherine Percy.
He was the Second Earl of Kent from 1490 to 1505.
Lady Katherine Percy
Lady Katherine Percy (18 May 1423 –) was the daughter of Henry Percy, 2nd Earl of Northumberland and Lady Eleanor Neville.
Her maternal grandparents were Ralph Neville, 1st Earl of Westmorland and his second wife Joan Beaufort, a legitimized daughter of John of Gaunt.
She married Edmund Grey, 1st Earl of Kent and had seven children:
Anne Woodville
Anne Woodville, Viscountess Bourchier( c. 1438 – 30 July 1489) was an English noblewoman.
She was a younger sister of Queen Consort Elizabeth Woodville to whom she served as a lady- in- waiting.
Anne was married twice; first to William Bourchier, Viscount Bourchier, and secondly to George Grey, 2nd Earl of Kent.
Anne was the grandmother of the disinherited adulteress Anne Bourchier, 7th Baroness Bourchier, and an ancestress of Robert Devereux, 2nd Earl of Essex.
Henry Grey, 4th Earl of Kent
Henry Grey, 4th Earl of Kent( c. 1495 – 24 September 1562) was Earl of Kent from 1524 to his death.
He was a son of George Grey, 2nd Earl of Kent and his second wife Catherine Herbert.
His maternal grandparents were William Herbert, 1st Earl of Pembroke and Anne Devereux.
His father was previously married to Anne Woodville, a daughter of Richard Woodville, 1st Earl Rivers and Jacquetta of Luxembourg.
His only known paternal half- brother was Richard Grey, 3rd Earl of Kent.
Richard succeeded their father as Earl of Kent but wound up heavily in debt, probably through gambling, and was forced to alienate most of his property.
A good part ended up in the crown's hands; historians disagree regarding what this says about the relationship of Henry VII of England with the aristocracy.
When Richard died childless, Henry inherited the title of Earl of Kent and what was left of the associated property.
Henry tried, with little success, to reacquire the property Richard had sold, and had to live as a modest gentleman, never formally taking title as earl.
He married Anne Blennerhassett daughter of John Blennerhassett and Jane Higham.
They had two children:

Question: Who is the maternal grandfather of George Grey, 2Nd Earl Of Kent?
Answer: Henry Percy, 2nd Earl of Northumberland