Paternal Family Tree: Braose
Maternal Family Tree: Aoife ni Diarmait Macmurrough Countess Pembroke and Buckingham 1145-1188
Before 1221 [her father] William de Braose 9th Baron Abergavenny 7th Baron Bramber [aged 16] and [her mother] Eva Marshal [aged 17] were married. She the daughter of [her grandfather] William Marshal 1st Earl Pembroke and [her grandmother] Isabel Clare Countess Pembroke.
Around 1222 Isabella "Lady of Snowdon" Braose Princess Wales was born to William de Braose 9th Baron Abergavenny 7th Baron Bramber [aged 18] and Eva Marshal [aged 19].
In June 1228 [her grandfather] Reginald de Braose 8th Baron Abergavenny 6th Baron Bramber died at Brecon [Map]. His son [her father] William [aged 24] succeeded 9th Baron Abergavenny Feudal Creation, 7th Baron Bramber Feudal.
In 1230 Dafydd ap Llewellyn Prince of Wales [aged 17] and Isabella "Lady of Snowdon" Braose Princess Wales [aged 8] were married. She the daughter of William de Braose 9th Baron Abergavenny 7th Baron Bramber [aged 26] and Eva Marshal [aged 27]. They were half fourth cousins. He a grandson of King John of England.
On 2nd May 1230 [her father] William de Braose 9th Baron Abergavenny 7th Baron Bramber [aged 26] was hanged by [her father-in-law] Llewellyn "The Great" Aberffraw [aged 58] for having been found in the bedchamber of his wife [her mother-in-law] Joan Plantagenet [aged 39]. His daughter [her sister] Eva [aged 3] succeeded 10th Baroness Abergavenny Feudal Creation. William Cantilupe by marriage Baron Abergavenny Feudal Creation. His first cousin John [aged 33] succeeded 8th Baron Bramber Feudal.
On 6th June 1237 John Dunkeld 9th Earl Huntingdon 7th Earl Chester 8th Earl Northampton [aged 30] died. Matthew Paris suggests he was poisoned by his wife [her sister-in-law] Elen ferch Llewellyn Aberffraw Countess Huntingdon and Mar [aged 19]. Earl Huntingdon, Earl of Northampton extinct. Earl Chester merged with the Crown.
In 1240 [her husband] Dafydd ap Llewellyn Prince of Wales [aged 27] was created Prince of Wales. Isabella "Lady of Snowdon" Braose Princess Wales [aged 18] by marriage Princess of Wales.
In 1246 [her mother] Eva Marshal [aged 43] died.
On 25th February 1246 [her husband] Dafydd ap Llewellyn Prince of Wales [aged 33] died at Abergwyngregyn Bangor.
Around 1248 Isabella "Lady of Snowdon" Braose Princess Wales [aged 26] died. She was buried at Godstow Abbey [Map].
Kings Gwynedd: Great x 8 Grand Daughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings Seisyllwg: Great x 10 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 8 Grand Daughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings France: Great x 7 Grand Daughter of Hugh I King of the Franks
Kings Duke Aquitaine: Great x 11 Grand Daughter of Ranulf I Duke Aquitaine
Great x 4 Grandfather: William de Braose 1st Baron Bramber
Great x 3 Grandfather: Phillip de Braose 2nd Baron Bramber
Great x 2 Grandfather: William de Braose 3rd Baron Bramber
Great x 4 Grandfather: Juhel Totnes
Great x 3 Grandmother: Aenor Totnes Baroness Bramber
Great x 1 Grandfather: William de Braose 4th Baron Bramber
5 x Great Grandson of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Great x 4 Grandfather: Walter Gloucester
Great x 3 Grandfather: Miles Gloucester 1st Earl Hereford
Great x 4 Grandmother: Emme or Bertha Balun
Great x 2 Grandmother: Bertha Gloucester Baroness Bramber 4 x Great Granddaughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Great x 4 Grandfather: Bernard Neufmarché
Great x 3 Grandmother: Sibyl Neufmarché Countess Hereford 3 x Great Granddaughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Great x 4 Grandmother: Agnes or Nest St John
2 x Great Granddaughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Grandfather: Reginald de Braose 8th Baron Abergavenny 6th Baron Bramber
6 x Great Grandson of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Great x 3 Grandfather: Reginald St Valery
Great x 2 Grandfather: Bernard St Valery
Great x 1 Grandmother: Maud "Lady of Hay" St Valery Baroness Bramber
Great x 2 Grandmother: Matilda Unknown
father: William de Braose 9th Baron Abergavenny 7th Baron Bramber
7 x Great Grandson of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Grandmother: Graecia Briwere
Isabella "Lady of Snowdon" Braose Princess Wales
7 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandfather: Gilbert Giffard
Great x 1 Grandfather: John Fitzgilbert
Grandfather: William Marshal 1st Earl Pembroke
Great x 3 Grandfather: Edward of Salisbury 1st Baron Trowbridge 1st Baron Chitterne
Great x 2 Grandfather: Walter of Salisbury 2nd Baron Chitterne
Great x 1 Grandmother: Sybil of Salisbury
mother: Eva Marshal
6 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandfather: Richard de Clare
Great x 3 Grandfather: Gilbert de Clare
Great x 4 Grandmother: Rohese Giffard
Great x 2 Grandfather: Gilbert de Clare 1st Earl Pembroke
Great x 4 Grandfather: Hugh Clermont Count of Clermont-en-Beauvaisis
Great x 3 Grandmother: Adeliza Clermont
Great x 1 Grandfather: Richard "Strongbow" Clare 2nd Earl Pembroke
4 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandfather: Roger "Bearded" Beaumont
Great x 3 Grandfather: Robert Beaumont 1st Earl of Leicester Count Meulan
Great x 4 Grandmother: Adeline of Meulan
Great x 2 Grandmother: Isabel Beaumont Countess Pembroke
3 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandfather: Hugh "Great" Capet
Great Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Elizabeth Capet Countess Leicester, Meulan and Surrey
2 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Adelaide I Countess Vermandois 8 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Grandmother: Isabel Clare Countess Pembroke
5 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandfather: Diarmait Macmurrough
Great x 1 Grandmother: Aoife ni Diarmait Macmurrough Countess Pembroke and Buckingham