In 1315, Edward II, who was guardian of the three sisters and heiresses of the estate of Gilbert de Clare replaced de Badlesmere with a new English administrator, Payn de Turberville of Coity, who persecuted the people of Glamorgan, then (like many in northern Europe at the time) in the throes of a serious famine.
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The death of Gilbert de Clare, the Lord of Glamorgan and the most prominent landowner in the south, at the battle of Bannockburn in June 1314, left a power vacuum in the region, and the heavy-handed response of the English Crown towards overseeing de Clare's lands there, combined with the death of several hundred men of Glamorgan at Bannockburn, precipitated a revolt in the lordship in late summer of that year.
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The revolt quickly spread through Glamorgan and Gwent; Kenfig castle was sacked, as was the castle at Llantrisant, and several others were attacked, including St Georges-super-Ely, Llangibby and Dinefwr Castle.
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This gallant behaviour earned him the respect of his captors, including Roger Mortimer, one of the witnesses to his surrender and Hereford and Mortimer both promised to try to intercede on Llywelyn's behalf.
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In October 1326 following the successful rebellion led by Roger Mortimer the Despensers and Edward had further cause to regret their actions in Glamorgan after they were forced to flee there.
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Llywelyn is conjectured to have been born some time before 1267, as Gruffudd was dispossessed of the lordship of Senghenydd in that year by Gilbert de Clare and subsequently imprisoned in Ireland; there is no record of him returning to Wales.
Llywelyn the Last | Bren light machine gun | Gruffydd ap Llywelyn | Llywelyn the Great | Llywelyn | Morgan Llywelyn | Milton H. Bren | Madog ap Llywelyn | Llywelyn the Elder ap Maredudd ap Cynan ab Owain Gwynedd | Llywelyn Siôn | Llywelyn Bren | Llywelyn ap Dafydd |
He was relieved of his constabulatory responsibilities the following year and called to raise troops in response to the insurrection led by Llywelyn Bren.