Hugh and John de Vinon occur in the Rotuli Hundredorum, с. 1272; but there, as here, the name intended is Vivonne; a family that, according to Hutchins, came into Dorsetshire at the Conquest. It is probable they were cadets of the great French house of Vivonne, and derived their surname from a seigneurie of Fors, in Poitou. Hugh de Vivonne, styled de Fortibus, was Constable of Corfe Castle in 1240, Sheriff of Dorset and Somerset for the nine ensuing years, and Steward of Poitou, Acquitaine and Gascony, under Henry III. He married Mabel, the elder co-heir of William Malet, Baron of Eye, and had, besides a daughter, two sons, William and Hugh. “William, the eldest son, in 32 Henry III. had leave to go over to Poitou to recover such lands and tenements as ought to descend to him by inheritance from the death of Americ de Vivonia, his uncle. He married Maud de Kyme, sixth daughter and co-heir of Sybyl de Ferrers, by whom he had four daughters, his co-heirs.” He has sometimes been confounded with his namesake, William de Fortz, Earl of Albemarle who bore totally different arms. In the Roll of Arms, t. Henry III. edited by Nicholas, William de Fortz de Vivonia bears D'argent a chef de goules, and the other William de Fortz, Earl of Albemarle, De goules ung croix paté de verre. — Archæological Journal, vol. 18. The eldest of these, Joan, married Reginald Fitz Peter; the second, Cecily, John Beauchamp of Hacche; the third, Sibil, Guy de Roche Chinard De Rupe Canardi): and the fourth, Maud, Fulk de l’Orty (Ibid.).

“Hugh de Vivonia, second son of Hugh by Mabel Malet, held the manor of Sellinge, in Kent, which he obtained (as I conjecture) with his wife Petronilla, daughter of William de Putot: he was slain in Wales, and left issue by his said wife a son, named John de Vivonia, who died 8 Ed. II., seized of the manor of Sellinge aforesaid, which he held of the King in chief by the service of one knight’s fee and the payment of 10s. annually for castle-ward of Dover; and Peter Fitz-Reginald, son and heir of Joan de Vivonia, one of the daughters and heirs of William de Fortibus, uncle of the said John, and Cecilia de Bellocampo, another daughter and heir of the said William, were found to be his cousins and next heirs, Peter being thirty years of age, and Cecilia upwards of forty. Peter became ancestor of the Gwillims and Herberts, and a score of other Welsh families: from Cecilia descended the Lord Protector Somerset, whose heir is now her representative.” - Townsend's Additions to Dugdale's Baronage. John de Vivonia served as knight of the shire for Gloucester in 1309, and for Wilts in 1313. - Palgrave's Parliamentary Writs.