William de Valence 1st Earl Pembroke was born to Hugh X of Lusignan V Count La Marche and Isabella of Angoulême Queen Consort England.
Around April 1200 King John of England and Isabella Fitzrobert 3rd Countess Gloucester and Essex marriage annulled due to consanuinity but more likely because John's new status as heir to the English throne mean't he had better prospects. He may have already decided to marry [his mother] Isabella of Angoulême Queen Consort England who he married on 24th August 1200.
On 24th August 1200 King John of England and [his mother] Isabella of Angoulême Queen Consort England were married. She had been engaged to [his grandfather] Hugh IX of Lusignan IV Count of La Marche who subsequently appealed to King Philip II of France, their feudal overlord, who used the position to justify a war against John. The difference in their ages was 21 years. She the daughter of Aymer I Count Angoulême and Alice Courtenay Countess Angoulême. He the son of King Henry "Curtmantle" II of England and Eleanor of Aquitaine Queen Consort Franks and England.
On 8th October 1200 [his mother] Isabella of Angoulême Queen Consort England was crowned Queen Consort England at Westminster Abbey.
During the night of 18th and 19th October 1216 King John of England died at Newark Castle, Nottinghamshire. [his half-brother] King Henry III of England succeeded III King of England.
John Monmouth was present.
On his deathbed, John appointed a council of thirteen executors to help Henry reclaim the kingdom and requested that his son be placed into the guardianship of William Marshal 1st Earl Pembroke.
King John's will is the earliest English royal will to survive in its original form. The document is quite small, roughly the size of a postcard and the seals of those who were present at the time would have been attached to it. Translation of the will taken from an article by Professor S.D. Church in the English Historical Review, June 2010:
I, John, by the grace of God king of England, lord of Ireland, duke of Normandy and Aquitaine, count of Anjou, hindered by grave infirmity and not being able at this time of my infirmity to itemize all my things so that I may make a testament, commit the arbitration and administration of my testament to the trust and to the legitimate administration of my faithful men whose names are written below, without whose counsel, even in good health, I would have by no means arranged my testament in their presence, so that what they will faithfully arrange and determine concerning my things as much as in making satisfaction to God and to holy Church for damages and injuries done to them as in sending succour to the land of Jerusalem and in providing support to my sons towards obtaining and defending their inheritance and in making reward to those who have served us faithfully and in making distribution to the poor and to religious houses for the salvation of my soul, be right and sure. I ask, furthermore, that whoever shall give them counsel and assistance in the arranging of my testament shall receive the grace and favour of God. Whoever shall infringe their arrangement and disposition, may he incur the curse and indignation of almighty God and the blessed Mary and all the saints.
In the first place, therefore, I desire that my body be buried in the church of St Mary and St Wulfstan at Worcester. I appoint, moreover, the following arbiters and administrators: the lord Guala, by the grace of God, cardinal-priest of the title of St Martin and legate of the apostolic see; the lord Peter bishop of Winchester; the lord Richard bishop of Chichester; the lord Silvester bishop of Worcester; Brother Aimery de St-Maur; William Marshal earl of Pembroke; Ranulf earl of Chester; William earl Ferrers; William Brewer; Walter de Lacy and John of Monmouth; Savaric de Mauléon; Falkes de Bréauté.
The signatories were:
Guala Bicchieri (ca 1150 - 1227) Papal Legate.
Bishop Peter de Roches, Bishop of Winchester.
Richard le Poer (? - 1237), Bishop of Chichester.
Sylvester of Worcester, Bishop of Worcester.
Aimery de St-Maur (? -?1219), Master of the English Templars.
William Marshal 1st Earl Pembroke.
Ranulf de Blondeville Gernon 6th Earl Chester 1st Earl Lincoln.
William Ferrers 4th Earl of Derby.
William Brewer (? - 1226), 1st Baron Brewer.
Walter de Lacy (ca 1172-1241) Lord of Meath.
John: (1182 - 1248) Lord of Monmouth.
Savaric de Mauléon (? - 1236) Seneschal of Poitou from 1205.
Falkes de Bréauté (? - 1226) Seneschal of Cardiff Castle.
On 5th November 1219 [his grandfather] Hugh IX of Lusignan IV Count of La Marche died. [his father] Hugh X of Lusignan V Count La Marche succeeded X Seigneur of Lusignan.
On 10th May 1220 [his father] Hugh X of Lusignan V Count La Marche and [his mother] Isabella of Angoulême Queen Consort England were married. She by marriage Seigneur of Lusignan, Countess La Marche. She the daughter of [his grandfather] Aymer I Count Angoulême and [his grandmother] Alice Courtenay Countess Angoulême.
On 22nd November 1220 [his future brother-in-law] Frederick I King Jerusalem II Holy Roman Emperor was crowned II Holy Roman Emperor. [his half-sister] Isabella Plantagenet Holy Roman Empress by marriage Holy Roman Empress.
On 21st June 1221 [his brother-in-law] King Alexander II of Scotland and [his half-sister] Joan Plantagenet Queen of Scotland were married at York Minster. She by marriage Queen Consort Scotland. She the daughter of King John of England and [his mother] Isabella of Angoulême Queen Consort England. He the son of King William I of Scotland and Ermengarde Beaumont Sarthe Queen Consort Scotland.
On 23rd April 1224 [his brother-in-law] William "The Younger" Marshal 2nd Earl Pembroke and [his half-sister] Eleanor Plantagenet Countess Pembroke and Leicester were married. She by marriage Countess Pembroke. The difference in their ages was 25 years. She the daughter of King John of England and [his mother] Isabella of Angoulême Queen Consort England. He the son of William Marshal 1st Earl Pembroke and Isabel Clare Countess Pembroke.
In 1225 [his half-brother] Richard of Cornwall 1st Earl Cornwall was created 1st Earl Cornwall.
On 30th March 1231 [his half-brother] Richard of Cornwall 1st Earl Cornwall and [his sister-in-law] Isabel Marshal Countess Cornwall, Gloucester and Hertford were married at Fawley, Lambourn. She by marriage Countess Cornwall. She the daughter of William Marshal 1st Earl Pembroke and Isabel Clare Countess Pembroke. He the son of King John of England and [his mother] Isabella of Angoulême Queen Consort England.
In April 1231 Hawise Gernon 2nd Countess Lincoln succeeded 2nd Countess Lincoln. Robert Quincy Earl Lincoln by marriage Earl Lincoln. She was gifted the title by her childless brother Ranulf de Blondeville Gernon 6th Earl Chester 1st Earl Lincoln by agreement with [his half-brother] King Henry III of England.
Before 1235 [his brother] Hugh XI of Lusignan VI Count of La Marche II Count Angoulême and [his sister-in-law] Yolande Capet Countess Lusignan, La Marche and Angoulême were married. She the daughter of Peter of Dreux aka Mauclerc Duke Brittany and Alix Thouars Duchess of Brittany. He the son of [his father] Hugh X of Lusignan V Count La Marche and [his mother] Isabella of Angoulême Queen Consort England.
On 20th July 1235 [his brother-in-law] Frederick I King Jerusalem II Holy Roman Emperor and [his half-sister] Isabella Plantagenet Holy Roman Empress were married at Worms Cathedral. She the daughter of King John of England and [his mother] Isabella of Angoulême Queen Consort England. He the son of Henry Hohenstaufen VI Holy Roman Emperor.
On 14th January 1236 [his half-brother] King Henry III of England and [his sister-in-law] Eleanor of Provence Queen Consort England were married at Canterbury Cathedral by Archbishop Edmund Rich. She the daughter of Raymond IV Count Provence and Beatrice Savoy Countess Provence. He the son of King John of England and [his mother] Isabella of Angoulême Queen Consort England.
In 1238 [his brother-in-law] Simon de Montfort 6th Earl of Leicester 1st Earl Chester and [his half-sister] Eleanor Plantagenet Countess Pembroke and Leicester were married at Westminster Palace. She by marriage Countess of Leicester. She the daughter of King John of England and [his mother] Isabella of Angoulême Queen Consort England. He the son of Simon "Elder" Montfort 5th Earl of Leicester and Alix Montmorency.
On 4th March 1238 [his half-sister] Joan Plantagenet Queen of Scotland died at Havering atte Bower, Essex. She was buried at Tarrant Abbey, Dorset.
In 1240 [his brother] Bishop Aymer de Valence was appointed Bishop of Winchester.
On 27th June 1241 Gilbert Marshal 4th Earl Pembroke was killed in a tournament at Ware, Hertfordshire. He was buried at Temple Church, London next to his father. Walter Marshal 5th Earl Pembroke succeeded 5th Earl Pembroke; he had also attended the tournament. The King [his half-brother] King Henry III of England had expressly forbidden the tournament leading to anger at his disobeying the King's orders.
In 1243 [his brother-in-law] Raymond Rouerge VII Count Toulouse and [his sister] Margaret Lusignan Countess Toulouse were married. She by marriage Countess Toulouse. The difference in their ages was 28 years. She the daughter of [his father] Hugh X of Lusignan V Count La Marche and [his mother] Isabella of Angoulême Queen Consort England. He the son of Raymond Count of Toulouse and Joan Plantagenet Queen Consort Sicily.
On 23rd November 1243 [his half-brother] Richard of Cornwall 1st Earl Cornwall and [his sister-in-law] Sanchia Provence Queen Consort Germany were married at Westminster Abbey. She by marriage Countess Cornwall. She the daughter of Raymond IV Count Provence and Beatrice Savoy Countess Provence. He the son of King John of England and [his mother] Isabella of Angoulême Queen Consort England.
On 4th June 1246 [his mother] Isabella of Angoulême Queen Consort England died at Fontevraud Abbey. [his brother] Hugh XI of Lusignan VI Count of La Marche II Count Angoulême succeeded II Count Angoulême. [his sister-in-law] Yolande Capet Countess Lusignan, La Marche and Angoulême by marriage Countess Angoulême.
In 1247 William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke were married. He the son of Hugh X of Lusignan V Count La Marche and Isabella of Angoulême Queen Consort England.
In 1247 William de Valence 1st Earl Pembroke was created 1st Earl Pembroke. [his wife] Joan Munchensi Countess Pembroke by marriage Countess Pembroke.
In 1247 [his brother-in-law] John Warenne 6th Earl of Surrey and [his sister] Alice Lusignan Countess of Surrey were married. She by marriage Countess Surrey. She the daughter of [his father] Hugh X of Lusignan V Count La Marche and [his mother] Isabella of Angoulême Queen Consort England. He the son of William Warenne 5th Earl of Surrey and Maud Marshal Countess Norfolk and Surrey.
On 5th June 1249 [his father] Hugh X of Lusignan V Count La Marche died. [his brother] Hugh XI of Lusignan VI Count of La Marche II Count Angoulême succeeded XI Seigneur of Lusignan, VI Count La Marche. [his sister-in-law] Yolande Capet Countess Lusignan, La Marche and Angoulême by marriage Seigneur of Lusignan, Countess La Marche.
In 1250 [his daughter] Agnes Valence died.
On 6th April 1250 [his brother] Hugh XI of Lusignan VI Count of La Marche II Count Angoulême died. [his nephew] Hugh XII of Lusignan VII Count of La Marche III Count Angoulême succeeded XII Seigneur of Lusignan, VII Count La Marche, III Count Angoulême.
On 5th December 1250 [his brother] Bishop Aymer de Valence died at Paris.
On 9th February 1256 [his sister] Alice Lusignan Countess of Surrey died.
On 14th May 1264 the army of [his brother-in-law] Simon de Montfort 6th Earl of Leicester 1st Earl Chester including Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford, Henry Hastings and Nicholas Segrave 1st Baron Segrave defeated the army of [his half-brother] King Henry III of England during the Battle of Lewes at Lewes.
King Henry III of England, his son, the future, [his nephew] King Edward I of England, Humphrey Bohun 2nd Earl Hereford 1st Earl Essex, Richard of Cornwall 1st Earl Cornwall, John "Red" Comyn 1st Lord Baddenoch, Philip Marmion 5th Baron Marmion and John Giffard 1st Baron Giffard Brimpsfield were captured. John Warenne 6th Earl of Surrey, John Balliol, Robert Bruce 5th Lord Annandale, Roger Leybourne and William de Valence 1st Earl Pembroke fought for the King. Guy Lusignan was killed. Fulk IV Fitzwarin drowned. Bishop Walter de Cantelupe was present and blessed the Montfort army before the battle.
On 4th August 1265 the army loyal to [his half-brother] King Henry III of England, led by his son the future [his nephew] King Edward I of England, supported by Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford, Warin Basingburne and John Giffard 1st Baron Giffard Brimpsfield defeated the rebel army of [his brother-in-law] Simon de Montfort 6th Earl of Leicester 1st Earl Chester at the Battle of Evesham.
Roger Leybourne fought and reputedly saved the King's life.
Adam Mohaut rescued the King.
Alan de Plugenet of Kilpec fought for the King.
Simon de Montfort 6th Earl of Leicester 1st Earl Chester was killed. Earl of Leicester, Earl Chester forfeit. His son Henry Montfort was also killed.
Hugh Despencer was killed by Roger Mortimer 1st Baron Mortimer of Wigmore. Baron Despencer extinct. It may not have been created as a hereditary barony.
Simon Beauchamp, Ralph Basset, William Devereux, Hugh Troyes, Richard Trussel, Peter Montfort, William Mandeville, William Crepping, William Birmingham, Guy Balliol and Thomas Astley were killed. Henry Hastings, Humphrey Bohun, Nicholas Segrave 1st Baron Segrave, John Vesci, John Fitzjohn and Guy Montfort Count Nola were captured.
John Vesci was wounded and taken prisoner.
On 16th June 1269 [his half-brother] Richard of Cornwall 1st Earl Cornwall and [his sister-in-law] Beatrice Falkenburg Countess Cornwall were married at Kaiserslautern. She by marriage Countess Cornwall. He the son of King John of England and [his mother] Isabella of Angoulême Queen Consort England.
On 3rd August 1271 John Plantagenet died at Wallingford, Oxfordshire whilst in the care of his great uncle [his half-brother] Richard of Cornwall 1st Earl Cornwall. He was buried at Westminster Abbey.
On 2nd April 1272 [his half-brother] Richard of Cornwall 1st Earl Cornwall died at Berkhamsted Castle, Hertfordshire. He was buried at Hailes Abbey. [his nephew] Edmund "Almain" 2nd Earl Cornwall succeeded 2nd Earl Cornwall.
On 16th November 1272 [his half-brother] King Henry III of England died at Westminster. [his nephew] King Edward I of England succeeded I King of England. Eleanor of Castile Queen Consort England by marriage Queen Consort England.
Around 1275 [his son] Aymer de Valence 2nd Earl Pembroke was born to William de Valence 1st Earl Pembroke and [his wife] Joan Munchensi Countess Pembroke. He married 1. before 1295 Béatrix de Clermont 2. 1321 Marie Chatillon Countess Pembroke, daughter of Guy Chatillon IV Count Saint Pol and Marie Capet.
On 13th April 1275 [his half-sister] Eleanor Plantagenet Countess Pembroke and Leicester died at Montargis Abbey.
In January 1277 [his son] John Valence died.
Before 1282 [his son-in-law] John Hastings 13th Baron Abergavenny 1st Baron Hastings and Isabel Valence Baroness Bergavenny Baroness Hastings were married. She by marriage Baroness Abergavenny Feudal Creation. She the daughter of William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke.
On 17th June 1282 the army of Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford were ambushed by the Welsh at Llandeilo.
[his son] William "The Younger" Valence was killed.
Much of Gilbert Clare's army of 1600 men was destroyed.
In 1288 [his sister] Margaret Lusignan Countess Toulouse died.
Before 1295 Aymer de Valence 2nd Earl Pembroke and Béatrix de Clermont were married. He the son of William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke.
On 13th June 1296 William de Valence 1st Earl Pembroke died or was killed at Bayonne. He was buried at the west side of the door to Chapel of St Edmund, Westminster Abbey where there is an altar-tomb of stone, surmounted by a broken sarcophagus, on which is a recumbent effigy of the earl. The figure is of wood, and was originally covered with copper-gilt, as was the chest on which it lies. An indulgence of one hundred days was granted to all devout people who should offer up prayers for his soul.
Effigy of William de Valence, Earl of Pembroke. WILLIAM DE VALENCE, son of [his father] Hugh de Brun, Earl of March, and half-brother by his mother, Isabel d'Angouleme, to Henry III, in 1247, came to England. Soon after his arrival he was with great state and solemnity knighted by the king at Westminster, who continuing to lavish favours on him and his brothers, and also giving himself too much to their counsels, the indignation and hatred of the barons was raised against them. In consequence William de Valence was obliged to quit the kingdom, but returning three or four years after, commanded in the king's army at the battle of Lewes, 1264. On seeing the day lost he fled to Pevensey, and from thence to France; but it appears he did not remain there any time, being at the battle of Evesham, 1265, which restored to Henry III. his regal authority. William de Valence, 10th of Edward I, 1283, was in the expedition against the Welsh, and in 1296 being at Bayonne, was there slain by the French.
His monument is composed of an altar tomb of stone, on which is raised a superstructure of oak, bearing the effigy of the deceased, formed of the same material: the whole of this wood-work was once covered with plates of copper enamelled and gilt; but of these splendid decorations, there is scarcely any thing left but what is to be found on the figure, which has also suffered in parts. The human form is rudely expressed, a costly display of materials and workmanship appears to have been the principal object of the artist who executed it; and it indeed gives a very high idea of the goldsmith's art at that early period. William de Valence is represented entirely in mail. On his head is a rich circle, once adorned with stones or glass, but the empty collets now only remain. The surcoat has been powdered with a number of little escutcheons bearing the arms of De Valence, only three of these are left; the situation and number of those gone may be easily traced. The rich lacing about the surcoat and arms, appears to have been used for the purpose of concealing the unsightly joinings of the plates which cover the figure. In the spurs it is remarkable that they have been fastened on with cloth, in form of straps of an extraordinary thickness; of these, as might be expected, but a small portion remains. The table of the tomb has been covered with a fret of the arms of England and De Valence; it is possible that on the raised border which surrounded it, was the inscription, perfect in Weever's time, who says, "about the verge or side of his monument these verses are inlayed with brasse."
On 20th September 1307 [his former wife] Joan Munchensi Countess Pembroke died. [his son] Aymer de Valence 2nd Earl Pembroke succeeded 2nd Earl Pembroke.
[his son] William "The Younger" Valence was born to William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke.
[his son] John Valence was born to William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke.
[his daughter] Joan Valence Lady Baddenoch was born to William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke. She married John Comyn 3rd Lord Baddenoch and had issue.
[his daughter] Isabel Valence Baroness Bergavenny Baroness Hastings was born to William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke. She married before 1282 John Hastings 13th Baron Abergavenny 1st Baron Hastings and had issue.
[his daughter] Agnes Valence was born to William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke. She married 1. John Avesnes, son of Bouchard Avesnes and Margaret II Countess Flanders 2. Hugh Balliol.
John Hastings 2nd Earl Pembroke 1347 1375 Arms. Quartered 1&4 
Hastings Arms 2&3 
Valence Arms. Valence for his birthplace Sutton Valence Castle, and was a great great grandson of William de Valence 1st Earl Pembroke. Source.
[his daughter] Margaret Valence was born to William de Valence 1st Earl Pembroke and Joan Munchensi Countess Pembroke.
