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In page Maud de Braose, Baroness Mortimer of Wigmore:

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In 1247 Maud married Roger Mortimer of Wigmore.[1][2] An old manuscript (written in Latin) describing the foundation of Wigmore Abbey recorded that Rog (secundus)...Radulphi et Gwladusae filius wedded Matildem de Brewys, filiam domini Willielmi de Brewys domini de Breghnoc.[citation needed] As the eldest son of Ralph de Mortimer and his Welsh wife, Princess Gwladys Ddu, Roger was himself a scion of another important Marcher family, and had succeeded his father in 1246, upon the latter's death. He was created 1st Baron Mortimer of Wigmore on an unknown date. Maud was seven years his senior, and they had been betrothed since childhood. He was the grandson of Llewelyn, Prince of Wales, the man who had ordered the execution of her father.