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.
Henry of Grosmont, 1st Duke of Lancaster
Henry of Grosmont, 1st Duke of Lancaster, 4th Earl of Leicester and Lancaster, Earl of Derby (– 23 March 1361), of Bolingbroke Castle in Lincolnshire, was a member of the English royal family and a prominent English diplomat, politician, and soldier.
He was the wealthiest and most powerful peer of the realm.
The son and heir of Henry, 3rd Earl of Lancaster, and Maud Chaworth, he became one of King Edward III's most trusted captains in the early phases of the Hundred Years' War and distinguished himself with victory in the Battle of Auberoche.
He was a founding member and the second Knight of the Order of the Garter in 1348, and in 1351 was created Duke of Lancaster.
An intelligent and reflective man, Grosmont taught himself to write and was the author of the book "Livre de seyntz medicines", a highly personal devotional treatise.
He is remembered as one of the founders and early patrons of Corpus Christi College, Cambridge, which was established by two guilds of the town in 1352.
Mary of Lancaster
Mary of Lancaster, Baroness Percy( 1320 – 1 September 1362), was the youngest surviving child of Henry, 3rd Earl of Lancaster by his wife Maud Chaworth.
Through her father, she was a great- granddaughter of Henry III of England.
Elizabeth of Lancaster, Duchess of Exeter
Elizabeth of Lancaster( bf. 21 February
1363 – 24 November 1426) was the third child of John of Gaunt, 1st Duke of Lancaster, and his first wife Blanche of Lancaster.
Blanche of Lancaster
Blanche of Lancaster (25 March 1342 – 12 September 1368) was a member of the English royal House of Plantagenet and the daughter of the kingdom's wealthiest and most powerful peer, Henry of Grosmont, 1st Duke of Lancaster.
She was the first wife of John of Gaunt, the mother of King Henry IV, and the grandmother of King Henry V of England.
Antigone of Gloucester, Countess of Tankerville
Antigone of Gloucester was an English noblewoman and the illegitimate daughter of Humphrey of Lancaster, 1st Duke of Gloucester( 1390 – 1447).
She was the granddaughter of King Henry IV.
She is thought to have been born between 1425 and 1428.
Her date of death is not known, but it was later than 1450.
Maud, Countess of Leicester
Maud of Lancaster( 4 April 1340 – 10 April 1362), also known as Matilda, Countess of Hainault, was a 14th- century English noblewoman who married into the Bavarian royal family.
The eldest daughter of Henry of Grosmont, 1st Duke of Lancaster and Earl of Leicester, and his wife Isabel de Beaumont, she was born at Bolingbroke Castle in Lindsey.
Maud Chaworth
Maud de Chaworth (2 February 1282 – 3 December 1322) was an English noblewoman and wealthy heiress.
She was the only child of Patrick de Chaworth.
Sometime before 2 March 1297, she married Henry, 3rd Earl of Lancaster, by whom she had seven children.
Edmund of Langley, 1st Duke of York
Edmund of Langley, 1st Duke of York, KG (5 June 13411 August 1402) was the fourth surviving son of King Edward III of England and Philippa of Hainault.
Like many medieval English princes, Edmund gained his nickname from his birthplace: Kings Langley Palace in Hertfordshire.
He was the founder of the House of York, but it was through the marriage of his younger son, Richard of Conisburgh, 3rd Earl of Cambridge, to Anne de Mortimer, great-granddaughter of Edmund's elder brother Lionel of Antwerp, 1st Duke of Clarence, that the House of York made its claim to the English throne in the Wars of the Roses.
The other party in the Wars of the Roses, the incumbent House of Lancaster, was formed from descendants of Edmund's elder brother John of Gaunt, 1st Duke of Lancaster, Edward III's third son.
Charles Lennox, 1st Duke of Richmond
Charles Lennox, 1st Duke of Richmond, 1st Duke of Lennox, 1st Duke of Aubigny( 29 July 167227 May 1723), of Goodwood House near Chichester in Sussex, was an illegitimate son of King Charles II by his mistress Louise de Kérouaille, Duchess of Portsmouth.

Question: What is the date of death of Henry Of Grosmont, 1St Duke Of Lancaster's mother?
Answer: 1322