Sir Reginald (or Reynold) Fitz Piers, son by (1), and eventual heir, adult by 1248, d. 4 or 5 May 1286, succeeded to his brother Herbert Fitz Peter in 1248, lord of Blaen Llyfni, co. Brecknock, etc., sheriff of Hampshire and Constable of Windsor Castle 1261; m. (1) by Sep 1249 Alice (or Amice), living 1264, daughter & heir of William de Stanford, living 1224-5, lord of Stanford Dingley, co. Berks; m. (2) by 1274 Joan de Vivonia, b. 1251, d. 1 June 1314, widow of Ingram de Percy, daughter & heir of William de Fortibus (also styled le Fort) & Maud de Ferrers. Through her father, Joan inherited a 1/8th interest in the barony of Curry Malet, Somerset. [Ancestral Roots]
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Sir Reginald (or Reynold) fitz Peter, Knight, lord of Blaen Llyfni, co. Brecknock, sheriff of Hampshire and Constable of Winchester Castle 1261, d. 4 or 5 May 1285, heir of elder brother Herbert and son of Peter fitz Herbert, lord of Blaen Llyfni, co. Brecknock, by his first wife, Alice Fitz Roger of Warkworth. [Magna Charta Sureties]
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Reginald FitzPeter, Lord of Blenlevenny, with his members de la Mere and Talgarth. This feudal chief, who appears to have been a person of great rank in the time of Henry III, was especially summoned in the 41st of that monarch to aid Humphrey de Bohun, Earl of Hereford, in defence of the Marches, and in the next year had another summons to march against Llewellin. He m. Joan de Vivonia, dau. and coheir of William de Vivonia, surnamed "de Fortibus," from his valour in the field, Lord of Chewton in the county of Somerset, by Matilda de Kyme, dau. and coheir of William, Earl of Ferrers (by his first wife). With this lady Reginald acquired the Manor of Chuyton or Chewton, which he recevied the day of his marriage. They had issue, John Fitz-Reginald, Reginald Fitz-Reginald, and Peter Fitz-Reginald. [John Burke, History of the Commoners of Great Britain and Ireland, Vol. IV, R. Bentley, London, 1834, p. 729, Jones, of Llanarth]
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Reginald Fitz-Herbert. This feudal lord had summons to march against the Welsh in the 42nd Henry III [1258], and in two years afterwards received orders, as one of the barons marchers, to reside in those parts. In the 45th of the same reign [1261], he was made sheriff of Hampshire, and governor of the Castle of Winchester; and in the 48th [1264], he was one of those barons who undertook for the king's performance of what the king of France should determine regarding the ordinances of Oxford. He m. Joane, dau. of William de Fortibus, Lord of Chewton, co. Somerset, and dying in 1285, was s. by his son, John Fitz-Reginald. [Sir Bernard Burke, Dormant, Abeyant, Forfeited, and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 206, Fitz-Herbert, Baron Fitz-Herbert]