Ernest Blackie
Ernest Morell Blackie( 19 August 1867 – 1943) was an Anglican bishop in the 20th century.
Blackie was born in Leamington Spa and educated at Cheltenham Grammar School and the University of London.
Ordained in 1891, he was a curate at St Mark's Gloucester and then a minor canon at Rochester Cathedral until 1900.
He later became the rector of Limpsfield and then St Paul's York Place, Edinburgh before becoming the vicar of Windsor and an Honorary Chaplain to the King.
From 1921 to 1937 he was a residentiary canon at Lincoln Cathedral and for seven years a suffragan bishop in the Diocese of Lincoln( five as Suffragan Bishop of Grantham and two as Bishop of Grimsby) before his final appointment as Dean of Rochester, a position he held until his death in 1943.
In 1903 Blackie married Caroline Stewart, daughter of James Haldane Stewart Jr. and Emily Leveson- Gower of Titsey Place.
Her father was the son of James Haldane Stewart senior( the 19th century ecumenical prelate) and Mary Dale, daughter of David Dale.
Emily Leveson- Gower was a member of one of Britain's most aristocratic families and was a descendant of Thomas Howard, 4th Duke of Norfolk, Edmund Beaufort, 4th Duke of Somerset, Edward Seymour, 1st Duke of Somerset, Charles Brandon, 1st Duke of Suffolk, Henry Cavendish, 2nd Duke of Newcastle- upon- Tyne, Clarence, Thomas Tufton, 6th Earl of Thanet, George Plantagenet, 1st Duke of Clarence, Richard Neville, 16th Earl of Warwick or Warwick the Kingmaker William Russell, 1st Duke of Bedford and John Manners, 1st Duke of Rutland, William Cecil, 1st Baron Burghley, Thomas Cromwell, 1st Earl of Essex as well as Henry VII of England and James V of Scotland.
James FitzJames, 1st Duke of Berwick
James FitzJames, 1st Duke of Berwick, 1st Duke of Liria and Jérica, 1st Duke of Fitz- James( 21 August 1670 – 12 June 1734) was an Anglo- French military leader, illegitimate son of King James II of England by Arabella Churchill, sister of the 1st Duke of Marlborough.
Berwick was a successful general in the pay of Louis XIV of France.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.
George Plantagenet, 1st Duke of Bedford
George of York, 1st Duke of Bedford (March 1477 – March 1479) was the eighth child and third son of Edward IV of England and Elizabeth Woodville.
He was a younger brother of Elizabeth of York, Mary of York, Cecily of York, Edward V of England, Margaret Plantagenet, Richard of Shrewsbury, 1st Duke of York and Anne of York.
He was also an older brother of Catherine of York and Bridget of York.
He was born in Windsor Castle in March 1477, and was created Duke of Bedford in infancy, probably in 1478, after the former holder of the title, George Neville, was deprived of the title by act of Parliament, ostensibly for lack of money to maintain the style of a duke.
He was appointed the Lord Lieutenant of Ireland in 1478, one of a series of nominal and largely absent lieutenants.
George died aged two.
This is considered likely to have been due to an outbreak of bubonic plague.
He was buried in St George's Chapel at Windsor Castle on March 22, 1479.
Anne of York, Duchess of Exeter
Anne of York, Duchess of Exeter, aka Anne Plantagenet( 10 August 1439 – 14 January 1476), was the first child of Richard Plantagenet, 3rd Duke of York, and Cecily Neville.
She was thus the eldest sister of kings Edward IV( 1461 – 1483) and Richard III( 1483 – 1485); and of Edmund, Earl of Rutland, Elizabeth of York, Duchess of Suffolk, Margaret, Duchess of Burgundy and of George Plantagenet, 1st Duke of Clarence.
Edward Plantagenet, 17th Earl of Warwick
Edward Plantagenet, 17th Earl of Warwick( 25 February 1475 – 28 November 1499) was the son of George Plantagenet, 1st Duke of Clarence, and a potential claimant to the English throne during the reigns of both Richard III( 1483 – 1485) and his successor, Henry VII( 1485 – 1509).
He was also a younger brother of Margaret Pole, 8th Countess of Salisbury.
Wriothesley Russell, 3rd Duke of Bedford
Wriothesley Russell, 3rd Duke of Bedford (25 May 1708 – 23 October 1732) was an English nobleman and peer.
He was the son of Wriothesley Russell, 2nd Duke of Bedford.
Russell married his sister's stepdaughter, Lady Anne Egerton, daughter of Scroop Egerton, 1st Duke of Bridgwater, on 22 April 1725.
He died in 1732, aged 24 at Corunna, Spain, without issue.
He was buried on 14 December 1732 in the 'Bedford Chapel' at St. Michael’s Church, Chenies, Buckinghamshire, and his titles passed to his brother, John Russell, 4th Duke of Bedford.
Isabel Neville, Duchess of Clarence
Lady Isabel Neville
( 5 September 1451 – 22 December 1476) was the elder daughter and co-heiress of Richard Neville, 16th Earl of Warwick( the" Kingmaker" of the Wars of the Roses), and Anne de Beauchamp, suo jure 16th Countess of Warwick.
She was the wife of George Plantagenet, 1st Duke of Clarence.
She was also the elder sister of Anne Neville, who was Princess of Wales by her first marriage and Queen consort of England by her second.
Elizabeth Woodville
Elizabeth Woodville (also spelled Wydville, Wydeville, or Widvile) (c. 1437 – 8 June 1492) was Queen consort of England, as the spouse of King Edward IV from 1464 until his death in 1483.
At the time of her birth, her family was of middle rank in the English social hierarchy.
Her mother Jacquetta of Luxembourg had previously been an aunt by marriage to Henry VI.
Elizabeth's first marriage was to a minor supporter of the House of Lancaster, Sir John Grey of Groby.
He died at the Second Battle of St Albans, leaving Elizabeth a widowed mother of two sons.
Her second marriage to Edward IV was a cause célèbre of the day, thanks to Elizabeth's great beauty and lack of great estates.
Edward was the first king of England since the Norman Conquest to marry one of his subjects, and Elizabeth was the first such consort to be crowned queen.
Her marriage greatly enriched her siblings and children, but their advancement incurred the hostility of Richard Neville, Earl of Warwick, 'The Kingmaker', and his various alliances with the most senior figures in the increasingly divided royal family.
This hostility turned into open discord between King Edward and Warwick, leading to a battle of wills that finally resulted in Warwick switching allegiance to the Lancastrian cause, and to the execution of Elizabeth's father Richard Woodville in 1469.
After the death of her husband in 1483, Elizabeth remained politically influential even after her son, briefly proclaimed King Edward V of England, was deposed by her brother-in-law, Richard III.
Edward and his younger brother Richard both disappeared soon afterward, and are presumed to have been murdered.
Elizabeth subsequently played an important role in securing the accession of Henry VII in 1485.
Henry married her daughter Elizabeth of York, ended the Wars of the Roses, and established the Tudor dynasty.
Through her daughter, Elizabeth was a grandmother of the future Henry VIII.
Elizabeth was forced to yield pre-eminence to Henry VII's mother, Lady Margaret Beaufort; her influence on events in these years, and her eventual departure from court into retirement, remains obscure.

Question: Who is George Plantagenet, 1St Duke Of Bedford's maternal grandmother?
Answer: Jacquetta of Luxembourg