BORN_SHORT ‎1156 Hatfield, Essex, England, DIED_SHORT ‎3 feb 1245‎, 88 or 89 years, BURIED_SHORT ‎ Black Fiars, Oxford, Oxfordshire, England
Isabel de Bolebec, Countess of Oxford (c. 1164 – died 2 or 3 February 1245), was the eldest daughter and co-heiress of Hugh de Bolebec II, Lord of Whitchurch, Buckinghamshire, and his wife, Margaret de Montfichet. She married Robert de Vere, 3rd Earl of Oxford, and was a benefactress of the Order of Friars Preacher (Dominicans) in England.

Isabel de Bolebec was the daughter and co-heiress of Hugh de Bolebec II (died c. 1165), Lord of Whitchurch, Buckinghamshire, and his wife, Margaret de Montfichet. She had a brother, Walter, and a sister, Constance, the wife of Ellis de Beauchamp. In 1206-7 she and Constance were co-heirs to their niece, Isabel de Bolebec, daughter of their brother, Walter, and wife of Aubrey de Vere, 2nd Earl of Oxford.

Isabel's first husband was Henry de Nonant (Novaunt), Lord of Totnes, Devon, who died childless in 1206. After his death, Isabel petitioned the Crown in 1207 for the right to marry whom she wished. That same year she married Robert de Vere, by whom she had a son, Hugh de Vere, 4th Earl of Oxford.

In 1214 Robert inherited the earldom at the death of his brother, Aubrey de Vere, 2nd Earl of Oxford, without legitimate heirs, and Isabel became Countess of Oxford.

Oxford speedily joined the barons whose dissatisfaction with King John prompted their rebellion. On 15 June 1215 the King signed Magna Carta, and Oxford was one of twenty-five barons elected to guarantee its observance, and was thus among those excommunicated by Pope Innocent III when he released the King from its terms.

In 1216 King John besieged and took the Oxford's seat, Castle Hedingham, in Essex. However in 1217 Oxford made peace with the regents of John's son, henry III, and served as a royal judge until his death.

Robert de Vere, 3rd Earl of Oxford, died before 25 October 1221. The widowed Countess purchased the wardship of her minor son from the crown for 6000 marks. In 1237, she and Hugh traveled together on pilgrimage 'beyond the seas'.

In 1224-5 Isabel sued Woburn Abbey for the manor of Mendham.

Isabel was a benefactress of the Order of Friars Preacher (Dominicans) in England, helping them to find quarters at Oxford, and contributing to the building of their oratory there about 1227. When the friars needed a larger priory, she and the Bishop of Carlisle bought land south of Oxford and contributed most of the funds and materials. She was buried in the new church there.

As noted above, Isabel inherited the barony of Bolebec, and from her death in 1245 until 1703 the Earls of Oxford assumed the style of 'Baron de Bolebec', and from 1462-1625 the style of 'Viscount Bolebec'.

BORN_SHORT ‎1164, DIED_SHORT ‎before 25 oct 1221‎, at most 57 years, BURIED_SHORT ‎ Hatfield Regis Priory

From the Wiki:

Robert de Vere (c. 1164 – before 25 October 1221), hereditary Master Chamberlain of England, was the second surviving son of Aubrey de Vere, 1st Earl of Oxford, and Agnes of Essex. He succeeded his brother as Earl of Oxford, and was one of the guarantors of Magna Carta.

Robert de Vere was the second surviving son of Aubrey de Vere, 1st Earl of Oxford, and his third wife, Agnes of Essex. The date of his birth is not known, but he was likely born after 1164. Almost nothing is known of his life until 1207, when he married Isabel de Bolebec, the widow of Henry de Nonant (d.1206) of Totnes, Devon. In 1206-7 Isabel and her sister Constance were co-heiresses of their niece, another Isabel de Bolebec, countess of Oxford by her marriage to Robert de Vere's brother, Aubrey de Vere, 2nd Earl of Oxford, to the barony of Whitchurch. The fact that aunt and niece had identical names, Isabel de Bolbec, and were successively countesses of Oxford and heiresses of Whitchurch, has led to confusion between the two.

When Robert's brother, Aubrey de Vere, 2nd Earl of Oxford, died in 1214, Robert succeeded to his title and estates and the hereditary office of Master Chamberlain of England.

At the time of the 2nd Earl's death the dower of his second wife, Alice, said to have been a daughter of Roger Bigod, 2nd Earl of Norfolk,[3] had not been formalized. In 1215 Oxford settled his sister-in-law's dower by lot, drawing two knights' fees for every one drawn by Alice, the only known instance of dower being settled in this manner.

Oxford joined the disaffected barons who met at Stamford and forced King John to sign Magna Carta at Runnymede on 15 June 1215, and was elected one of the 25 barons who were guarantors of the King's adherence to its terms. Together with other Magna Carta barons he was excommunicated as a rebel by Pope Innocent III on 16 December 1215, and joined them in offering the crown to Prince Louis of France.

Oxford took up arms against King John, but pledged loyalty to him after the King had taken Castle Hedingham in March 1216. Later in the same year, however, he did homage to Prince Louis at Rochester. Louis entered London and was proclaimed King. On 14 June 1216, he captured Winchester, and soon controlled over half of England.

In the midst of this crisis, King John died, prompting many of the barons to desert Louis in favour of John's nine-year-old son, Henry III. In 1217 Prince Louis retook Castle Hedingham and restored it to Oxford, but despite this Oxford transferred his allegiance to the new King in October 1217. Although he did homage, he was not fully restored in his offices and lands until February 1218.

Earl Robert served as a king's justice in 1220-21, and died before 21 October 1221. He was buried at Hatfield Regis Priory, where either his son, Hugh de Vere, 4th Earl of Oxford, or his grandson, Robert de Vere, 5th Earl of Oxford had an effigy erected in which he is depicted in chain mail, cross-legged, pulling his sword from its scabbard and holding a shield with the arms of the Veres.