On 11 December, Llywelyn's army occupied a hillside north of the
Irfon River near the village of
Cilmeri, placed to repel any attack from the south across Orewin Bridge. The army is thought to have consisted of a few thousand spearmen and javelinmen from North Wales, with some men-at-arms from Llywelyn's own
teulu (household), and some local archers from
Brecon (who had betrayed their former English allies and joined Llywelyn, having been disappointed in the English failure at the Battle of Llandeilo Fawr). Altogether, the army is thought to have added up to around 7000 infantry and 160 Cavalry (Llywelyn's Teulu). Llywelyn himself was not present, having gone to speak with local leaders (possibly at Builth Castle). The exact circumstances are unclear and there are two conflicting accounts of his death. Both accounts agree that Llywelyn was tricked into leaving the bulk of his army and was then attacked and killed. The first account says that Llywelyn and his chief minister approached the forces of
Edmund Mortimer and
Hugh Le Strange after crossing a bridge. They then heard the sound of battle as the main body of his army was met in battle by the forces of
Roger Despenser and
Gruffydd ap Gwenwynwyn. Llywelyn turned to rejoin his forces and was pursued by a lone lancer who struck him down. It was not until some time later that an English knight recognised the body as that of the King. This version of events was written in the north of England some fifty years later and has suspicious similarities with details about the
Battle of Stirling Bridge in Scotland. An alternative version of events written in the east of England by monks in contact with Llywelyn's exiled daughter,
Gwenllian ferch Llywelyn, and niece,
Gwladys ferch Dafydd, states that Llywelyn, at the front of his army, approached the combined forces of Edmund and Roger Mortimer, Hugh Le Strange, and Gruffydd ap Gwenwynwyn on the promise that he would receive their homage. This was a deception. His army was immediately engaged in fierce battle during which a significant section of it was routed, causing Llywelyn and his eighteen retainers to become separated. At around dusk, Llywelyn and a small group of his retainers (which included clergy) were ambushed and chased into a wood at
Aberedw. Llywelyn was surrounded and struck down. As he lay dying, he asked for a priest and gave away his identity. He was then killed and his head hewn from his body. His person was searched and various items recovered, including a list of "conspirators", which may well have been faked, and his privy
seal. ==Aftermath==