Matilda de Braose (Deheubarth)
From Infogalactic: the planetary knowledge core
Matilda de Braose was the wife of Rhys Mechyll, son of Rhys Gryg and grandson of the Lord Rhys, Prince of Deheubarth.[1]
Rhys Mechyll died in 1244[1] and some time after this Matilda placed the castle of Carreg Cennen in the hands of the Normans.[2]
A Welsh chronicle, the Brut y Tywysogyon, records under the year 1248: "Rhys Fychan ap Rhys Mechyll regained the castle of Carreg Cennen, which his mother had treacherously placed in the power of the French, out of enmity for her son."[2]