Thomas (Beaumont) de Beaumont (abt. 1208 - 1242)

The Beaumont earls of Warwick descend from the younger son, Henry, of Roger de Vieilles, Seigneur de Beaumont-le-Roger, Adeline, the daughter of Waleran, comte de Meulan, who was created earl of Warwick by William II in 1088. Henry married Margaret, the daughter of Geoffrey comte de Motagne and de Perche and Beatrice de Ramerupt.

The male line of the Beaumont earls of Warwick became extinct following the death of Thomas in 1242 whose eventual heirs were the Beauchamp family of Worcestshire who were descendant from his aunt, Alice, who married William IV Mauduit.

Though of academic interest only, as Thomas and his sister Margaret, successive heirs to the earldom were to die without heirs of their blood.

Two eminent English academics both record that Philippa Basset was to have no children, this is supported by the IPM of John de Plessis and the inquest held at Buckingham in 1263 that clearly states that Thomas and Margaret were the children of Henry de Beaumont and his unnamed wife, who was the daughter of Henry I de Oilly and Margaret de Bohun amd the sister of Henry II de Oilly.

The IPM is supported by the Patent Roll entry dated 4 May 1253, that Margery was the niece and heir of Henry II de Oilly.

The IPM of Thomas earl of Warwick clearly defining that he did not hold any land that was once held by Thomas II Basset, the father of Philippa Basset, at the time of his death that one would expect him to hold if he was the son of Philippa.

[Calendar Patent Rolls HIII] 4 May 1253 Westminster. Grant to John de Plessetis, earl of Warwick, that all the lands late of Henry de Oyly, uncle of Margaret his wife, countess of Warwick, and of Thomas, sometime earl of Warwick, her brother, whose heir she is, in Hogenarton, Katerinton and Bradeham, with knights' fees, dowers, wards, reliefs, escheats and all other appurtenance which could fall to her by hereditary right or to the king or his heirs after her if she should die before the said John without giving birth to an heir of the said John, shall remain to the said John for his life, and after his death shall revert to the king or his heirs, or to the other right and next heirs of the said lands.

[CIPM HIII V1] No 558 John de Plessis earl of Warwick. Writ 7 March 47HIII [1263] Inquest held at Buckingham – Bradenham manor was not the escheat of Humphrey de Bohun, earl of Hereford and Essex, through the death of Margery, sometime countess of Warwick: for Humphrey de Bohun his grandfather gave the manor in free marriage to Henry de Oylly [Oilly] with Maud his sister, who had a son Henry and two daughters. Henry the younger died without heir of himself, and the right of the manor descended to the daughters, from the elder of whom issued Thomas earl of Warwick and one Margery: the said Thomas died without heir and the said Margery also; but from the younger sister, aunt of the said Margery, came one Walter de Daventre and the jury believe that whilst there are any heirs of the younger sister the manor cannot be escheat of the said Humphrey. After the death of the said Margery the said Humphrey obtained seisin of the manor for 15 days, because he understood that it was his escheat, and by his grant at the king’s instance the late earl of Warwick held it for life.