Elen ferch Llywelyn was the daughter of Llywelyn the Great

Llywelyn the Great

Llywelyn the Great , full name Llywelyn ab Iorwerth, was a Prince of Gwynedd in north Wales and eventually de facto ruler over most of Wales...

 of Gwynedd

Kingdom of Gwynedd

Gwynedd was one petty kingdom of several Welsh successor states which emerged in 5th-century post-Roman Britain in the Early Middle Ages, and later evolved into a principality during the High Middle Ages. It was based on the former Brythonic tribal lands of the Ordovices, Gangani, and the...

 in north Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

 by Lady Joan, daughter of King John of England

John of England

John , also known as John Lackland , was King of England from 6 April 1199 until his death...

.

Elen married John de Scotia, Earl of Chester

John de Scotia, 9th Earl of Huntingdon

John of Scotland , Earl of Huntingdon and 7th Earl of Chester , sometimes known as "the Scot", was an Anglo-Scottish magnate, the son of David of Scotland, Earl of Huntingdon by his wife Matilda of Chester, daughter of Hugh de Kevelioc.John married Elen ferch Llywelyn, daughter of Llywelyn the...

, in about 1222. He died aged thirty in 1237, and she was forced by King Henry III

Henry III of England

Henry III was the son and successor of John as King of England, reigning for 56 years from 1216 until his death. His contemporaries knew him as Henry of Winchester. He was the first child king in England since the reign of Æthelred the Unready...

 to marry Sir Robert de Quincy. Their daughter, Hawise, married Baldwin Wake, Lord Wake of Lidel. Hawise and Baldwin’s granddaughter, Margaret Wake

Margaret Wake, 3rd Baroness Wake of Liddell

Margaret Wake was the wife of Edmund of Woodstock, 1st Earl of Kent.-Biography:She was the daughter of John Wake, 1st Baron Wake of Liddell, and was descended directly from Llywelyn the Great, Prince of Gwynedd. Her mother was Joan de Fiennes, making her a cousin of Roger Mortimer, 1st Earl of...

, was the mother of Joan of Kent

Joan of Kent

Joan, Countess of Kent , known to history as The Fair Maid of Kent, was the first English Princess of Wales...

, the wife of Edward, the Black Prince

Edward, the Black Prince

Edward of Woodstock, Prince of Wales, Duke of Cornwall, Prince of Aquitaine, KG was the eldest son of King Edward III of England and his wife Philippa of Hainault as well as father to King Richard II of England....

 and the mother of Richard II of England

Richard II of England

Richard II was King of England, a member of the House of Plantagenet and the last of its main-line kings. He ruled from 1377 until he was deposed in 1399. Richard was a son of Edward, the Black Prince, and was born during the reign of his grandfather, Edward III...

, 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

Thomas Holland, 1st Earl of Kent

Thomas Holland, 1st Earl of Kent, 2nd Baron Holand, KG was an English nobleman and military commander during the Hundred Years' War.-Early Life:...

. Their eldest son, Thomas Holland, 2nd Earl of Kent

Thomas Holland, 2nd Earl of Kent

Thomas Holland , 2nd Earl of Kent, 3rd Baron Holand KG was an English nobleman and a councillor of his half-brother, King Richard II of England.-Family and early Life:...

, had two daughters: by one of them he was the grandfather of John Beaufort, 1st Duke of Somerset

John Beaufort, 1st Duke of Somerset

John Beaufort, 1st Duke of Somerset, KG was an English noble and military commander.-Family:Baptised on 25 March 1404, he was the second son of John Beaufort, 1st Earl of Somerset and Margaret Holland, and succeeded his elder brother Henry Beaufort, 2nd Earl of Somerset to become the 3rd Earl of...

; by the other he was the great-grandfather of Richard Plantagenet, 3rd Duke of York

Richard Plantagenet, 3rd Duke of York

Richard Plantagenêt, 3rd Duke of York, 6th Earl of March, 4th Earl of Cambridge, and 7th Earl of Ulster, conventionally called Richard of York was a leading English magnate, great-grandson of King Edward III...

. John Beaufort was the grandfather of Henry VII

Henry VII of England

Henry VII was King of England and Lord of Ireland from his seizing the crown on 22 August 1485 until his death on 21 April 1509, as the first monarch of the House of Tudor....

 while Richard Plantagenet was the father of Edward IV

Edward IV of England

Edward IV was King of England from 4 March 1461 until 3 October 1470, and again from 11 April 1471 until his death. He was the first Yorkist King of England...

 and Richard III

Richard III of England

Richard III was King of England for two years, from 1483 until his death in 1485 during the Battle of Bosworth Field. He was the last king of the House of York and the last of the Plantagenet dynasty...

 and a grandfather of Elizabeth of York

Elizabeth of York

Elizabeth of York was Queen consort of England as spouse of King Henry VII from 1486 until 1503, and mother of King Henry VIII of England....

, queen to Henry VII.

Elen ferch Llywelyn in Fiction

• Child of the Phoenix by Barbara Erskine
  Barbara Erskine
  Barbara Erskine is an English novelist.-Biography:Erskine owns homes in Hereford and Colchester, England. Erskine's first novel was published in 1986...
  
  
• Here Be Dragons by Sharon Kay Penman
  Sharon Kay Penman
  Sharon Kay Penman is an American historical novelist, published in the UK as Sharon Penman. She is best known for the Welsh Princes trilogy and the Plantagenet series. In addition, she has written four medieval mysteries, the first of which, The Queen's Man, was a finalist in 1996 for the Best...