Her surname may have been spelled "Briouze" or "Braiose".
Her first name may have been spelled "Eve".

Eve, the daughter of the youngest de Briouze brother, married c 1238 William de Cauntelo. Their son George held Abergavenny for some 18 years, but without issue. His heirs were his sister Millicent, who married as her second husband Eon la Zouche and with him was the ancestor of the Lords (Barons) Zouche of Haryngworth, and his nephew by another sister, Joan. [Burke's Peerage]

Eve de Briouze, daughter and coheir, heiress of Abergavenny. She m. after 25 July 1238 (when his father, William de Cantelou, obtained her wardship and marriage together with the custody of Abergavenny and the other lands falling to her share), and bef. 15 Feb 1247/8, William de Cantelou, of Calne, Wilts, and Aston Cantlow, co. Warwick. He d. at Calstone, Wilts, 25, and was buried 30 Sep 1254, at Studley Priory, co. Warwick. Writ of extent 15 Oct 1254. She d. in 1255, about 20 and bef. 28 July. [Complete Peerage I:22-3]

BIOGRAPHY
Eve, the daughter of the youngest de Briouze brother, married c 1238 William de Cauntelou. Their son George held Abergavenny for some 18 years, but without issue. His heirs were his sister Millicent, who married as her second husband Eon la Zouche and with him was the ancestor of the Lords (Barons) Zouche of Haryngworth, and his nephew by another sister, Joan. [Burke's Peerage]

Eve de Briouze, daughter and coheir, heiress of Abergavenny. She m. after 25 July 1238 (when his father, William de Cantelou, obtained her wardship and marriage together with the custody of Abergavenny and the other lands falling to her share), and bef. 15 Feb 1247/8, William de Cantelou, of Calne, Wilts, and Aston Cantlow, co. Warwick. He d. at Calstone, Wilts, 25, and was buried 30 Sep 1254, at Studley Priory, co. Warwick. Writ of extent 15 Oct 1254. She d. in 1255, about 20 and
bef. 28 July. [Complete Peerage I:22-3]

After the death of Eva's father William (II) de Cantilupe obtained the wardship and marriage of Eva in 1238. By July 1241 he had married her to his son William (III) de Cantilupe. The honour of Abergavenny and half the honour of Totnes enlarged the Cantilupe family holdings. Further lands descended through Eva on the death of her mother, one of the Marshal heiresses to the earldom of Pembroke. William died on 25 Sep 1254, immediately on his return from service in Gascony with the king. He was laid in his grave at Studley Priory, Warwickshire by Simon de Montfort, earl of Leicester and Humphrey de Bohun, earl of Hereford, Eva's brother in law.