The name Mansfield in Ireland is of Norman origin having been brought to the country in the twelfth century by the de Maydewell family who established the de Moinbhiol Sept along native Gaelic lines, and which was later anglicized to both Mandeville and Mansfield. The main settlement points were in Counties Antrim, Tipperary and Waterford. MacQuillan is another variant in County Antrim.