Anne Hastings, Countess of Pembroke
Anne Hastings, Countess of Pembroke and 2nd Baroness Manny( 24 July 1355 – 3 April 1384) was the daughter of Walter Manny, 1st Baron Manny and Margaret, Duchess of Norfolk.
In July 1368, she married John Hastings, 2nd Earl of Pembroke.
They had one son, John Hastings, 3rd Earl of Pembroke.
Her husband and father both died in 1375, and she became" suo jure" Baroness Manny( her one brother having died in his youth).
Shortly before her death in 1384, she was invested as a Lady of the Garter.
Henry Herbert, 9th Earl of Pembroke
Lt.- Gen. Henry Herbert, 9th Earl of Pembroke, 6th Earl of Montgomery( 29 January 16939 January 1749) was an English peer and courtier.
He was the heir and eldest son of Thomas Herbert, 8th Earl of Pembroke( c. 1656 – 1733) and his first wife Margaret Sawyer.
He was styled Lord Herbert from birth until he inherited his father's earldoms of Pembroke and Montgomery in 1733.
William Beauchamp, 1st Baron Bergavenny
William de Beauchamp, 1st Baron Bergavenny, KG( c. 1343 – 8 May 1411) was an English peer.
Beauchamp was the fourth son of Thomas de Beauchamp, 11th Earl of Warwick, and Katherine Mortimer.
He served under Sir John Chandos during the Hundred Years' War, and was created a Knight of the Garter in 1376.
He served as Captain of Calais in 1383.
Upon the death of his first cousin once removed, John Hastings, 3rd Earl of Pembroke on 30 December 1389, William inherited the lordship of Abergavenny, including Abergavenny Castle.
He was summoned to Parliament on 23 July 1392 as" Willilmo Beauchamp de Bergavenny", by which he is held to have become Baron Bergavenny, a barony by writ.
In 1399, he was appointed Justiciar of South Wales and Governor of Pembroke.
He entailed the castle and Honour of Abergavenny on the issue male of his body, with remainder to his brother Thomas de Beauchamp, 12th Earl of Warwick and his heirs male; his wife enjoyed it in dower until her death in 1435.
Bergavenny died in 1411 and was buried at Black Friars, Hereford.
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.
John Hastings, 2nd Earl of Pembroke
John Hastings, 2nd Earl of Pembroke, KG (1347–1375), was a fourteenth-century English nobleman and soldier.
He also held the title Baron Abergavenny.
He was born in Sutton Valence, the son of Laurence Hastings, 1st Earl of Pembroke, and Agnes Mortimer.
His father died when John Hastings was only a year old, and he became a ward of King Edward III whilst remaining in his mother's care.
The King arranged for John to marry Edward's daughter Margaret in 1359, which drew John into the royal family.
However, Margaret died two years later.
John Hastings inherited his father's earldom, subsidiary titles and estates in 1368.
The same year he made a second marriage, to Anne, daughter of Walter, Lord Mauny.
The following year Pembroke commenced the career in royal service that was to consume the rest of his life.
The Hundred Years' War had recently reignited in France, and in 1369 Pembroke journeyed to Aquitaine.
There he took part in a sequence of raids, sieges, and counter-measures against the French, with both notable successes and failures.
The latter were compounded by his apparent inability to work alongside the famed soldier Sir John Chandos, who, although head of the King's forces there, was far below Pembroke in rank.
He was, however, far above Pembroke in ability, and his subsequent death led to even more problems for Pembroke in France.
A couple of years later, the earl was summoned to parliament and returned to England.
There, perhaps exasperated by the political failures of the king's ecclesiastical ministers, he was responsible for forcing them from power and being replaced by laymen.
Pembroke was soon to return to France again, for what was to be the last time.
In 1372 he set off with a small fleet, intending to raise a new army once in Aquitaine.
However, his arrival had been anticipated by the Castilian navy (whose kingdom was then allied to France).
Pembroke, outnumbered and outgunned, was forced to fight at the Battle of La Rochelle, where he went down to a crushing defeat.
Captured and taken to Castile, he was imprisoned in harsh conditions.
It took a further three years for a large ransom to be negotiated, but in 1375, he was finally released.
Returning to England through France, he was taken ill near Paris and died before reaching home.
He was about 28 years old; his wife survived him, as did a son, born in 1372, whom Pembroke had never seen.
Also named John, he would eventually inherit the earldom.
Pembroke was buried in Hereford in spring 1375.
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.
Gilbert Talbot, 3rd Baron Talbot
Gilbert Talbot, 3rd Baron Talbot( c. 1332–1387) was an English nobleman and soldier.
He was the grandfather of John Talbot, 1st Earl of Shrewsbury.
William Herbert, 18th Earl of Pembroke
William Alexander Sidney Herbert, 18th Earl of Pembroke, 15th Earl of Montgomery( born 18 May 1978) is an English peer.
He became earl in 2003 following the death of his father, Henry Herbert, 17th Earl of Pembroke.
John Hastings, 3rd Earl of Pembroke
John Hastings, 3rd Earl of Pembroke (October 137230 December 1389) was the son of John Hastings, 2nd Earl of Pembroke and Anne Manny, 2nd Baroness Manny.
He was also Baron Abergavenny.
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.

Question: Who is John Hastings, 3Rd Earl Of Pembroke's paternal grandfather?
Answer: Laurence Hastings, 1st Earl of Pembroke