- Reginald de Braose, 9th Baron Abergavenny
Reginald de Braose, 9th
Baron Abergavenny( died June 1228 ) was one of the sons of William de Braose, 7th Baron Abergavennyand Matilda, also known as Maud, de St. Valery and Lady de la Haie. Her other children included William and Giles. [Oxford Dictionary of National Biography under Briouze [Braose] , William (III) de]
The de Braoses were loyal to King Richard I but grew in power under
King John of England. The dynasty was in conflict with King John towards the end of his reign and almost lost everything.
Magna Carta Rebel
He supported his brother
Giles de Braosein his rebellions against King John. Both brothers were active against the King in the Baron's War. Neither was present at the signing of Magna Cartain June 1215 because at this time they were still rebels who refused to compromise.
Royal Acquiescence & Welsh Vassal
King John acquiesced to Reginald's claims to the de Braose estates in Wales in May 1216. Reginald became Lord of
Brecon, Abergavenny, Builthand held other Marcher Lordships but was also very much a vassal of the Welsh leader Llewelyn Fawr, Prince of Gwynedd who became his father-in-law in 1222 when Reginald married Llywelyn's daughter, Gwladus Ddu, known as Black Gwladys due to her raven hair.
Henry III restored Reginald to favour and the Bramber estates (confiscated by King John) in 1217.
At this seeming betrayal, Rhys and Owain, Reginald's Welsh nephews who were Princes of
Deheubarth, were incensed and they took Builth, except the castle. Llywelyn Fawralso became angry and his forces besieged Brecon. Reginald eventually surrendered to Llewelyn and gave up Seinhenydd ( Swansea).
By 1221 they were at war again, with Llewelyn again laying siege to
Builth. The siege was relieved by King Henry III's forces. From this time on Llewelyn tended to support the claims of Reginald's nephew John de Braoseconcerning the de Braose lands in Wales.
Reginald was a witness to the re-issue of
Magna Cartaby King Henry III in 1225.
He died two or three years later in 1227 or 1228 in
Breconand was succeeded by his son, the ill-fated William de Braose, 10th Baron Abergavenny. He is buried at Brecon Cathedral. His daughter Matilda de Braosewas the wife of Rhys Mechyll, Prince of Deheubarth.
*Complete Peerage, G E Cokayne, Vol 1 pages 21-22 for the family of Reginald
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