Aergol Lawhir, King of Dyfed
(Born c.AD 460)
(Latin: Agricola; English: Agricole)

Aergol Lawhir or Long-Handed was the son and heir of King Triffyn Farfog. He traditionally held court at Lis Castell (Lydstep) and at nearby Din Bych (Tenby). He may possibly have had another residence at Castell Argoel, all in Dyfed. Aergol was supposedly a great benefactor of the church (later the cathedral) at Llandaff in the late 5th century. Certainly, he was patron of the great bishops of Glywysing, SS. Teilo and Euddogwy. The latter's father, King Budic II of Brittany, had found refuge at Aergol's court when expelled from his own country. While Teilo brought order to Aergol's boisterous royal hall by sending his followers, Llywel and Fidelis, as a calming influence. At some point, Aergol was in conflict with King Cynan Garwyn of Powys. Their two armies clashed at Crug Dyfed, but the outcome is not recorded. Aergol is remembered by the, usually critical, Gildas as an unnamed "good king" of Dyfed. He was succeeded by his son, Gwrthefyr (alias Vortepor) the Protector.