The Celtic Sea is the area of the Atlantic Ocean off the south coast of Ireland bounded to the east by Saint George's Channel; other limits include the Bristol Channel, the English Channel, and the Bay of Biscay, as well as adjacent portions of Wales, Cornwall, and Brittany.The southern and western boundaries are delimited by the continental shelf, which drops away sharply.

Anglo-Irish people (Irish: Angla-Éireannach) denotes an ethnic, social and religious grouping who are mostly the descendants and successors of the English Protestant Ascendancy in Ireland. They mostly belong to the Anglican Church of Ireland, which was the established church of Ireland until 1871, or to a lesser extent one of the English dissenting churches, such as the Methodist …