Margaret de Stafford
Margaret Stafford( born c. 1364; died 9 June 1396) was the daughter of Hugh de Stafford, 2nd Earl of Stafford, and Philippa de Beauchamp.
She was the first wife of Ralph Neville, 1st Earl of Westmorland, and the grandmother of the 2nd Earl.
William Herbert, 3rd Earl of Pembroke
William Herbert, 3rd Earl of Pembroke( 8 April 158010 April 1630) was an English nobleman, politician, and courtier.
He was the son of Henry Herbert, 2nd Earl of Pembroke and his third wife Mary Sidney.
Chancellor of the University of Oxford, he founded Pembroke College, Oxford with King James I.
He was warden of the Forest of Dean, and constable of St Briavels from 1608 to 1630.
He served as Lord Chamberlain from 1615 to 1625.
In 1623, the First Folio of William Shakespeare's plays was dedicated to him, together with his brother, Philip Herbert, 1st Earl of Montgomery.
William Herbert, 1st Earl of Pembroke (died 1570)
William Herbert, 1st Earl of Pembroke, 1st Baron Herbert of Cardiff( c. 150117 March 1570) was a Tudor period nobleman, politician, and courtier.
Herbert was the son of Sir Richard Herbert and Margaret Cradock.
His father was an illegitimate son of William Herbert, 1st Earl of Pembroke of the eighth creation( 1468) by his mistress, Maud, daughter of Adam ap Howell Graunt.
Richard Marshal, 3rd Earl of Pembroke
Richard Marshal, 3rd Earl of Pembroke( 119116 April 1234), was the son of William Marshal, 1st Earl of Pembroke and brother of William Marshal, 2nd Earl of Pembroke, whom he succeeded to the Earldom of Pembroke and Lord Marshal of England upon his brother's death on 6 April 1231.
William Herbert, 2nd Earl of Pembroke
William Herbert, 2nd Earl of Pembroke (5 March 145116 July 1491) was an English nobleman and politician.
He was the son of William Herbert, 1st Earl of Pembroke and Anne Devereux.
His paternal grandparents were William ap Thomas and Gwladys, daughter of Dafydd Gam, and his maternal grandparents were Walter Devereux, Lord Chancellor of Ireland and Elizabeth Merbury.
He succeeded his father in the earldom in 1469.
In 1479, he was forced by Edward IV to surrender the earldom with its accompanying lands in Wales to Edward's son, the future Edward V, and was created Earl of Huntingdon.
William had hoped to restore to his family the Earldom of Pembroke.
Awarding lands in the south-west of England meant that Edward had moved the family influence out of Wales.
A Yorkist, he married Mary Woodville, sister of the queen, Elizabeth Woodville, and they had one daughter, Elizabeth Herbert, 3rd Baroness Herbert.
Herbert remained loyal to Richard III.
After the rebellion of 1483 he received the post of Chief Justice of South Wales, which had been the Duke of Buckingham's.
After his marriage to his second wife, Katherine, an illegitimate daughter of King Richard III of England in 1484, he received an annuity of some £1,000 pounds a year, nearly doubling his income.
Katherine is presumed to have died by 1487, because when William participated in the coronation of his first wife's niece, Elizabeth of York, he was noted to have been a widower.
When Henry of Richmond landed in south Wales in 1485 Herbert's position forced Henry to take a roundabout route into England.
It is likely that a Herbert agent first notified Richard III of Henry's landing.
Herbert did not, however, fight at Bosworth.
When he died, his only child, Elizabeth Herbert, received the Herbert lands, including Raglan Castle, but not his title.
However, his earldom did not pass to his younger brother, Walter Herbert, as it had already been merged into the crown.
The earldom would however be granted again to the Herbert family in 1551 as the tenth creation to his nephew, Sir William Herbert, the son of Sir Richard Herbert, an illegitimate son of William's father.
The Herbert family today still retains the earldom of Pembroke, among others.
Barbara Herbert, Countess of Powis
Barbara Herbert, Countess of Powis( 24 June 1735 – 12 March 1786), was the wife of General Henry Herbert, 1st Earl of Powis, and the mother of George Herbert, 2nd Earl of Powis.
Barbara's father, Lord Edward Herbert, was a younger son of William Herbert, 2nd Marquess of Powis; he married Lady Henrietta Waldegrave, but died only a few months after the wedding, in 1734.
Barbara was born three months after her father's death, and was fifteen when she married Henry Herbert on 30 March 1751; Henry was in his late forties.
Henry was descended from Richard Herbert, 2nd Baron Herbert of Chirbury, and was created Earl of Powis in 1748, following the death without heirs of William Herbert, 3rd Marquess of Powis.
The couple had two children:
In 1771, shortly before the earl's death, the family seat at Oakly Park was sold to Robert Clive, 1st Baron Clive, and they moved permanently to Powis Castle.
A portrait of Barbara by an unknown artist, dated to approximately 1750, is held at Powis Castle, in the care of the National Trust.
Marie de St Pol
Marie de St Pol, Countess of Pembroke( c.1303–1377) was the wife of Aymer de Valence, 2nd Earl of Pembroke( c.1275-1324), and is best known as the foundress of Pembroke College, Cambridge.
William Herbert, 1st Earl of Pembroke (died 1469)
William Herbert, 1st Earl of Pembroke (c. 142327 July 1469), known as "Black William", was a Welsh nobleman, soldier, politician, and courtier.
He was the son of William ap Thomas, founder of Raglan Castle, and Gwladys ferch Dafydd Gam, and grandson of Dafydd Gam, an adherent of King Henry V of England.
His father had been an ally of Richard of York, and Herbert supported the Yorkist cause in the Wars of the Roses.
In 1461 Herbert was rewarded by King Edward IV with the title Baron Herbert of Raglan (having assumed an English-style surname in place of the Welsh patronymic), and was invested as a Knight of the Garter.
Soon after the decisive Yorkist victory at the Battle of Towton in 1461, Herbert replaced Jasper Tudor as Earl of Pembroke which gave him control of Pembroke Castle.
However, he fell out with Lord Warwick "the Kingmaker" in 1469, when Warwick turned against the King.
Herbert was denounced by Warwick and the Duke of Clarence as one of the king's "evil advisers".
William and his brother Richard were executed by the Lancastrians, now led by Warwick, after the Battle of Edgecote Moor, near Banbury.
Herbert was succeeded by his son, William, but the earldom was surrendered in 1479.
It was later revived for a grandson, another William Herbert, the son of Black William's illegitimate son, Sir Richard Herbert of Ewyas.
Mary Woodville
Mary Woodville, Countess of Pembroke( c. 1456–1481) was a sister of Edward IV's Queen consort, Elizabeth Woodville, and of Anthony Woodville, 2nd Earl Rivers.
She later became the first wife of William Herbert, 2nd Earl of Pembroke, by whom she had one daughter.
Henry Herbert, 2nd Earl of Pembroke
Henry Herbert, 2nd Earl of Pembroke( aft. 153819 January 1601) was a Welsh nobleman, peer and politician of the Elizabethan era.

Question: Who is the paternal grandmother of William Herbert, 2Nd Earl Of Pembroke?