Eriach
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
In the Brehon law. A pecuniary satisfaction or recompense, correspending in some degree with the weregild of the Saxon law, which a party guilty of murder was condemned to pay to the wife or child or friends of the deceased.
4 Bl. Comm. 313.
The same, probably, with enach, in old Scotch law. Skene de Verb. Sign. voc. "Enach."