Coraniaid

In medieval Welsh narrative the Coraniaid appear as an external oppressive people that arrived in Britain and remained there. Triadic tradition records them as one of the "Three Oppressions" of Britain; at least one Triad explicitly states they "came from Asia." Later antiquarian accounts sometimes attempt to equate them with historical groups or otherworldly peoples, but those later identifications are contested in the sources.

Primary sources give little physical detail; the name is etymologically linked to Welsh corrach (plural corachod) and corachaidd, terms translated as 'dwarf' or 'stunted/dwarfish,' which implies they may have been imagined as of small stature. The core tale emphasizes their sensory capacity rather than a consistent bodily description.

Their principal power is supernaturally acute hearing—summarized as the ability to "hear any word the wind touches"—which makes them able to detect spoken plans or approaching danger carried on the air and thus effectively impervious to ordinary attack. In the Lludd and Llefelys tale they function as an invading/afflicting people whose presence causes such trouble that royal intervention and a special remedy are required.