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Bertha of Hereford, also known as Bertha de Pitres (born c. 1130), was the daughter of Miles de Gloucester, 1st Earl of Hereford, and a wealthy heiress, Sibyl de Neufmarché. She was the wife of William de Braose, 3rd Lord of Bramber to whom she brought many castles and Lordships, such as Brecknock (including Hay Castle), and Abergavenny.
Berta supradicta, dicti comitis Milonis secunda filia, fuit desponsata Willielmo Brewes, cum dominio de Brekenoke; de quibus procreati fuerunt tres filii, viz. Willielmus, Egidius, et Reginaldus.