Paternal Family Tree: Brienne
Maternal Family Tree: Alice Sanford Countess of Oxford
Before 1387 [her father] Henry Beaumont 5th Baron Beaumont [aged 6] and [her mother] Elizabeth Willoughby Baroness Beaumont [aged 2] were married. She by marriage Baroness Beaumont. They were third cousin once removed. He a great x 4 grandson of King Henry III of England.
Around 1400 Elizabeth Beaumont Baroness Deincourt and Grey was born to Henry Beaumont 5th Baron Beaumont [aged 20] and Elizabeth Willoughby Baroness Beaumont [aged 16]. Some source state her birth date as around 1387 but her father was born around 1380 so her birth date adjusted to 1400.
On 11th May 1406 John Deincourt 5th Baron Deincourt [aged 24] died at Blankney, Lincolnshire. He was buried at Blankney, Lincolnshire. His son [her future husband] William [aged 3] succeeded 6th Baron Deincourt.
On 20th November 1408 Joan Grey 5th Baroness Grey [aged 22] died. Her son [her future husband] William [aged 5] succeeded 6th Baron Grey of Rotherfield.
In June 1413 [her father] Henry Beaumont 5th Baron Beaumont [aged 33] died at Sempringham. His son [her brother] John [aged 3] succeeded 6th Baron Beaumont.
On 3rd January 1418 William Deincourt 6th Baron Deincourt 6th Baron Grey [aged 15] and Elizabeth Beaumont Baroness Deincourt and Grey [aged 18] were married. She by marriage Baroness Deincourt and Baroness Grey of Rotherfield. They were fourth cousin once removed. She a great x 5 granddaughter of King Henry III of England.
On 5th September 1422 [her husband] William Deincourt 6th Baron Deincourt 6th Baron Grey [aged 19] died. Baron Deincourt and Baron Grey of Rotherfield abeyant between his two sisters [her sister-in-law] Alice Deincourt 6th Baroness Deincourt and Grey, Baroness Lovel and Sudeley [aged 18] and Margaret Deincourt Baroness Cromwell [aged 16].
After 15th July 1427 Richard Hastings [aged 40] and Elizabeth Beaumont Baroness Deincourt and Grey [aged 27] were married.
On 12th November 1428 [her mother] Elizabeth Willoughby Baroness Beaumont [aged 44] died.
In 1436 [her brother] John Beaumont 1st Viscount Beaumont [aged 26] and [her sister-in-law] Elizabeth Phelip Viscountess Beaumont were married. They were sixth cousins. He a great x 5 grandson of King Henry III of England. She a great x 5 granddaughter of King Edward I of England.
Chronicle of Walter of Guisborough
A canon regular of the Augustinian Guisborough Priory, Yorkshire, formerly known as The Chronicle of Walter of Hemingburgh, describes the period from 1066 to 1346. Before 1274 the Chronicle is based on other works. Thereafter, the Chronicle is original, and a remarkable source for the events of the time. This book provides a translation of the Chronicle from that date. The Latin source for our translation is the 1849 work edited by Hans Claude Hamilton. Hamilton, in his preface, says: 'In the present work we behold perhaps one of the finest samples of our early chronicles, both as regards the value of the events recorded, and the correctness with which they are detailed; Nor will the pleasing style of composition be lightly passed over by those capable of seeing reflected from it the tokens of a vigorous and cultivated mind, and a favourable specimen of the learning and taste of the age in which it was framed.'
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On 10th September 1436 [her husband] Richard Hastings [aged 49] died at York Castle [Map].
after 10th September 1436 Thomas Neville [aged 29] and Elizabeth Beaumont Baroness Deincourt and Grey [aged 36] were married. They were half second cousin once removed. He a great x 3 grandson of King Edward I of England. She a great x 5 granddaughter of King Henry III of England.
Around 1439 [her son] Humphrey Neville was born to [her husband] Thomas Neville [aged 31] and Elizabeth Beaumont Baroness Deincourt and Grey [aged 39]. He a great x 4 grandson of King Edward I of England.
On 12th February 1440 [her brother] John Beaumont 1st Viscount Beaumont [aged 30] was created 1st Viscount Beaumont by letters patent. [her sister-in-law] Elizabeth Phelip Viscountess Beaumont by marriage Viscountess Beaumont.
In February 1441 [her brother-in-law] Ralph Neville 2nd Earl of Westmoreland [aged 34] and Margaret Cobham Countess Westmoreland were married. She by marriage Countess of Westmoreland. They were fourth cousin once removed. He a great x 3 grandson of King Edward I of England.
In October 1441 [her brother] John Beaumont 1st Viscount Beaumont [aged 32] and [her sister-in-law] Katherine Neville Duchess Norfolk [aged 41] were married. She by marriage Viscountess Beaumont. She the daughter of Ralph Neville 1st Earl of Westmoreland and Joan Beaufort Countess of Westmoreland. They were fourth cousins. He a great x 5 grandson of King Henry III of England. She a great granddaughter of King Edward III of England.
In July 1447 Elizabeth Beaumont Baroness Deincourt and Grey [aged 47] died.
On 22nd February 1458 [her former husband] Thomas Neville [aged 51] died at Brancepeth, County Durham.
[her son] Charles Neville was born to Thomas Neville and Elizabeth Beaumont Baroness Deincourt and Grey. He a great x 4 grandson of King Edward I of England.
George Neville was born to Thomas Neville. His mother may have been Elizabeth Beaumont Baroness Deincourt and Grey but it isn't certain. He a great x 4 grandson of King Edward I of England. He married before 1488 his second cousin once removed Mary Fitzlewis Countess Rivers and had issue.
Kings Wessex: Great x 12 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 9 Grand Daughter of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 15 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 10 Grand Daughter of Maredudd ap Bleddyn King Powys
Kings England: Great x 5 Grand Daughter of King Henry III of England
Kings Scotland: Great x 8 Grand Daughter of King William I of Scotland
Kings France: Great x 6 Grand Daughter of King Louis VIII of France
Kings Duke Aquitaine: Great x 16 Grand Daughter of Ranulf I Duke Aquitaine
Kings Spain: Great x 8 Grand Daughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Louis Brienne Viscount Beaumont 2 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Henry Beaumont Earl Buchan 
3 x Great Grandson of King Henry I "Beauclerc" England
Great x 4 Grandmother: Agnes Beaumont Sarthe 2 x Great Granddaughter of King Henry I "Beauclerc" England
Great x 2 Grandfather: John Beaumont 2nd Baron Beaumont 4 x Great Grandson of King Henry I "Beauclerc" England
Great x 4 Grandfather: Alexander Comyn 4 x Great Grandson of King David I of Scotland
Great x 3 Grandmother: Alice Comyn 4th Countess Buchan 5 x Great Granddaughter of King David I of Scotland
Great x 4 Grandmother: Joanna Latimer 11 x Great Granddaughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Great x 1 Grandfather: Henry Beaumont 3rd Baron Beaumont 2 x Great Grandson of King Henry III of England
Great x 4 Grandfather: Edmund "Crouchback" Plantagenet 1st Earl of Leicester 1st Earl Lancaster 
son of King Henry III of England
Great x 3 Grandfather: Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster Grandson of King Henry III of England
Great x 4 Grandmother: Blanche Capet Queen Navarre 
Granddaughter of King Louis VIII of France
Great x 2 Grandmother: Eleanor Plantagenet Countess Arundel and Surrey 
Great Granddaughter of King Henry III of England
Great x 4 Grandfather: Patrick Chaworth 
Great x 3 Grandmother: Maud Chaworth 9 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Isabella Beauchamp 
8 x Great Granddaughter of Hugh I King of the Franks
Grandfather: John Beaumont 4th Baron Beaumont 3 x Great Grandson of King Henry III of England
Great x 4 Grandfather: Robert de Vere 5th Earl of Oxford 
7 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: Alphonse Vere 8 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandmother: Alice Sanford Countess of Oxford
Great x 2 Grandfather: John de Vere 7th Earl of Oxford 9 x Great Grandson of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Great x 4 Grandfather: Jordan Foliot 7 x Great Grandson of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Great x 3 Grandmother: Jane Foliot 8 x Great Granddaughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Great x 1 Grandmother: Margaret Vere Baroness Devereux and Beaumont 5 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Gunselin Badlesmere 
Great x 3 Grandfather: Bartholomew Badlesmere 1st Baron Badlesmere
Great x 4 Grandmother: Joan Fitzbernard
Great x 2 Grandmother: Maud Badlesmere Countess of Oxford 4 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Thomas de Clare 
4 x Great Grandson of King Henry I "Beauclerc" England
Great x 3 Grandmother: Margaret Clare Baroness Badlesmere 3 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Juliana Fitzgerald 
2 x Great Granddaughter of King Henry "Curtmantle" II of England
father: Henry Beaumont 5th Baron Beaumont 4 x Great Grandson of King Henry III of England
Great x 3 Grandfather: Adam Everingham 1st Baron Everingham of Laxton
Great x 2 Grandfather: Adam Everingham 2nd Baron Everingham of Laxton
Great x 1 Grandfather: Thomas Everingham
Grandmother: Katherine Everingham Baroness Beaumont
Elizabeth Beaumont Baroness Deincourt and Grey 5 x Great Granddaughter of King Henry III of England
Great x 4 Grandfather: Robert Willoughby 1st Baron Willoughby 
Great x 3 Grandfather: John Willoughby 2nd Baron Willoughby 7 x Great Grandson of King Henry I "Beauclerc" England
Great x 4 Grandmother: Margaret Deincourt Baroness Willoughby of Eresby 6 x Great Granddaughter of King Henry I "Beauclerc" England
Great x 2 Grandfather: John Willoughby 3rd Baron Willoughby 
8 x Great Grandson of King Henry I "Beauclerc" England
Great x 3 Grandmother: Joan Roscelyn Baroness Willoughby and Latimer
Great x 1 Grandfather: Robert Willoughby 4th Baron Willoughby 9 x Great Grandson of King Henry I "Beauclerc" England
Great x 4 Grandfather: Robert Ufford 1st Baron Ufford 
Great x 3 Grandfather: Robert Ufford 1st Earl Suffolk
Great x 4 Grandmother: Cecily Valoignes Baroness Ufford 
Great x 2 Grandmother: Cecily Ufford Baroness Willoughby of Eresby
Great x 4 Grandfather: Walter Norwich
Great x 3 Grandmother: Margaret Norwich Countess Suffolk
Grandfather: William Willoughby 5th Baron Willoughby 6 x Great Grandson of King William I of Scotland
Great x 4 Grandfather: William Zouche 1st Baron Zouche Harringworth 
9 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: Eudo Zouche 4 x Great Grandson of King William I of Scotland
Great x 4 Grandmother: Maud Lovell Baroness Zouche Harringworth 
3 x Great Granddaughter of King William I of Scotland
Great x 2 Grandfather: William Zouche 2nd Baron Zouche Harringworth 5 x Great Grandson of King William I of Scotland
Great x 1 Grandmother: Margery Zouche Baroness Willoughby of Eresby 5 x Great Granddaughter of King William I of Scotland
Great x 4 Grandfather: William Ros 1st Baron Ros Helmsley 
2 x Great Grandson of King William I of Scotland
Great x 3 Grandfather: William Ros 2nd Baron Ros Helmsley 3 x Great Grandson of King William I of Scotland
Great x 4 Grandmother: Maud Vaux Baroness Ros 
Great x 2 Grandmother: Elizabeth Ros Baroness Zouche Harringworth 4 x Great Granddaughter of King William I of Scotland
Great x 4 Grandfather: Bartholomew Badlesmere 1st Baron Badlesmere
Great x 3 Grandmother: Margery Badlesmere Baroness Ros of Helmsley 4 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Margaret Clare Baroness Badlesmere 3 x Great Granddaughter of King Henry "Curtmantle" II of England
mother: Elizabeth Willoughby Baroness Beaumont 7 x Great Granddaughter of King John of England
Great x 4 Grandfather: John Strange 1st Baron Strange Knockin 
5 x Great Grandson of King Henry I "Beauclerc" England
Great x 3 Grandfather: John Strange 2nd Baron Strange Knockin 6 x Great Grandson of King Henry I "Beauclerc" England
Great x 4 Grandmother: Maud Walton Baroness Strange Knockin
Great x 2 Grandfather: Roger Strange 4th Baron Strange Knockin 7 x Great Grandson of King Henry I "Beauclerc" England
Great x 3 Grandmother: Isolde Chaworth Baroness Strange Knockin
Great x 1 Grandfather: Roger Strange 5th Baron Strange Knockin 6 x Great Grandson of King William I of Scotland
Great x 3 Grandfather: Oliver Ightham
Great x 2 Grandmother: Joan Ightham Baroness Strange Knockin 5 x Great Granddaughter of King William I of Scotland
Great x 4 Grandfather: William Zouche 1st Baron Zouche Harringworth 9 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Elizabeth Zouche 4 x Great Granddaughter of King William I of Scotland
Great x 4 Grandmother: Maud Lovell Baroness Zouche Harringworth 3 x Great Granddaughter of King William I of Scotland
Grandmother: Lucy Strange Baroness Willoughby Eresby 6 x Great Granddaughter of King John of England
Great x 4 Grandfather: John Fitzalan 7th Earl of Arundel 
5 x Great Grandson of King Henry I "Beauclerc" England
Great x 3 Grandfather: Richard Fitzalan 1st or 8th Earl of Arundel 3 x Great Grandson of King John of England
Great x 4 Grandmother: Isabella Mortimer Countess Arundel 
2 x Great Granddaughter of King John of England
Great x 2 Grandfather: Edmund Fitzalan 2nd or 9th Earl of Arundel 4 x Great Grandson of King John of England
Great x 4 Grandfather: Thomas I Marquess Saluzzo 
5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandmother: Alice Saluzzo Countess Arundel 6 x Great Granddaughter of King William "Conqueror" I of England
Great x 1 Grandmother: Aline Fitzalan Baroness Strange Knockin 5 x Great Granddaughter of King John of England
Great x 4 Grandfather: John Warenne 6th Earl of Surrey 6 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: William Warenne 7 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandmother: Alice Lusignan Countess of Surrey 
6 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandmother: Alice Warenne Countess Arundel 8 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandfather: Robert de Vere 5th Earl of Oxford 7 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Joan Vere 8 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Alice Sanford Countess of Oxford