Photographs copyright © 2002 by Jeffrey L. Thomas
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On 9 August, Earl Edmund set out from Carmarthen for Rhys’s castle at Dryslwyn, at the head of an army of some 4,000 men. Some of these had been raised in England, others had been assembled locally under Robert de Tibetot. On 15 August, the earl’s forces were joined by an army of 6,700 ranks and officers, gathered under Reginald Grey (d.1308) who had set out from Chester and Roger l’Estrange who had marched from Montgomery.
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With the combined force of more than 11,000 assembled on the flat valley floor in front of Dryslwyn, on or just after the 15 August, the siege of Dryswlyn Castle began. Many of the men coming from Chester were drawn from the building works on King Edward’s north Wales castles. These craftsmen and others constructed a trebuchet, a siege machine capable of hurling huge stones at the castle walls. This machine, constructed with timber, hides, rope, and lead, cost £14. A total of 20 quarrymen and 24 carters were employed to shape and move the large stone balls which were hurled by the trebuchet at the castle.
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The archaeological excavation of the site has produced important evidence from the time of this siege. Two substantial stone balls, over 16 inches, and almost certainly thrown by the trebuchet, were recovered. Also recovered were many smaller stones which were thrown at the castle, as well as links of chain mail, arrowheads, slingshots and a spearhead. Over one hundred arrowheads were recovered, many with long sharp points deliberately made to penetrate amour and chain mail.