William III DE BRAOSE 11th Lord Abergavenny
Mathilde DE SAINT-VALÉRY Lady of la Haie
William DE BRIWERE Lord of Sumburne & Torre
Beatrice DE VAUX
(Abt 1160-1216)
Reginald DE BRAOSE Lord of Brecon, 13th Baron Abergavenny
(Abt 1179-Bef 1228)
Grace (Grecia) DE BRIWERE
(Abt 1183-Bef 1215)
(Abt 1200-)


Family Links

Rhys "Mechyll" AP RHYS Lord of Dynevor


  • Born: Abt 1200, Brecon, Breconshire, Wales
  • Married: Bef 1219

  General Notes:

Compiler's 21 x great-grandmother

  Research Notes:

On the matter of Matilda (Maud) de Braose, wife of Rhys Mechyll, the following note:

"I have found the record of a dispensation granted by Pope Martin IV, in a letter to Thomas, Bishop of St. Davids, dated at Orvieto on 10 December 1283. This dispensation was required because Rhys ap Maredudd and Ada de Hastings were related in the third and fourth degrees of consanguinity.

Ada de Hastings had no Welsh ancestor within 4 generations (up to her great-great grandparents), so it is evident that there is an English (or Anglo-Norman) or other non-Welsh ancestor of Rhys ap Maredudd. One possibility that I considered was Maud de Clare, widow of William de Braose (d. 1210) and wife (2ndly) of Rhys Gryg. I am not aware of any issue of this marriage of Rhys Gryg, but more importantly, the de Braose relationship this would create would be too distant (on the side of Ada de Hastings, anyway) to create a need for a dispensation.

The one other possibility was that Maredudd ap Rhys was the son of Rhys 'Mechyll' (d. 1244) by Maud de Braose, and that Maud was the daughter of Reginald de Braose (d. ca. 1228) by Grace de Briwere. This identification would yield the relationship of 3rd & 4th degrees stipulated in the dispensation...

This serves to correct the identification of Maredudd ap Rhys, father of Rhys 'Mechyll' (ex. 1292) as a son, not of Rhys Gryg ap Rhys (ap Gruffydd, aka 'the Lord Rhys'), but of Rhys 'Mechyll' ap Rhys (d. 1244) by his wife Maud de Braose. Further, this serves to confirm that this Maud de Braose was a daughter of Reginald de Braose, as previously suggested...." 1


Rhys Mechyll died in 1244 and some time after this Matilda placed the castle of Carreg Cennen in the hands of the Normans.

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


"Reginald de Braose also allied with Prince Rhys Mechyll of Deheubarth when his relationship with Llywelyn [ab Iorwerth] deteriorated in 1217. Rhys Mechyll married Reginald's daughter Matilda but by 1248 her hatred of her son exacerbated the family feud which finally destroyed the princes of Deheubarth. Matilda had handed Carreg Cennen over to the English and Rhys Fychan seized the castle back again in fury at his mother's treachery." 3

  Marriage Information:

Matilda married Rhys "Mechyll" AP RHYS Lord of Dynevor, son of Rhys "Gryg" AP RHYS Lord of Ystrad Tywi & Dynevor and Ellyw FERCH THOMAS, before 1219. (Rhys "Mechyll" AP RHYS Lord of Dynevor was born about 1170 in Dynevor Castle, Llandilo, Carmarthenshire, Wales and died in 1244 in Dynevor, Llandyfeisant, Carmarthenshire, Wales.)


1 Rootsweb, Archiver, Gen-Medieval, Rhys Mechyll and Maud de Braose redux, citing A. W. Haddan and William Stubbs, eds., Councils and Ecclesiastical Documents relating to Great Britain and Ireland (Oxford: Clarendon Press, 1869), I:551-2. The text reads, in part,

'Martinus Episcopus servus servorum Dei, venerabili fratri [Thomae] Episcopo Men., salutem et Apostolicam benedictionem. Quantum cum Deo possimus hijs libenter annuimus, per quae dissidentes ad pacis solatium reducantur. Ex parte siquidem nobilis viri Resi Mereduci et nobilis mulieris Audae de Hastinges tuae dyocesis fuit propositum coram nobis, quod ex inimicitiis et guerris, dudum inter ejusdem R. ex parte una et ipsius A. progenitores ex altera suscitatis, et rerum et personarum pericula plurima sunt secuta, et adhuc durant odia inter superstites eorundem; unde dicti R. et A., sperantes per matrimonialem communicationem ipsorum posse super praemissis plene reconciliationis commoda provenire, desiderant invicem propter hoc matrimonialiter copulari. Sed quia dicti Resus et Auda tertio ex una parte et quarto ex altera consanguinitatis gradu ad invicem se contingunt,..... '.

2 Wikipedia, Matilda de Braose, with source citations.

3 Welsh Princes.

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