The Pale or the English Pale was the part of Ireland directly under the control of the English government in the Late Middle Ages. It had been reduced by the late 15th century to an area along the east coast stretching north from Dalkey, south of Dublin, to the garrison town of Dundalk. The inland boundary went to Naas and Leixlip around the Earldom of Kildare, towards Trim and north towards Kells. In this district, many townlands have English or French names, the latter associated with Norman influence in England.

Irish, also known as Irish Gaelic or simply Gaelic, is a Goidelic language of the Insular Celtic branch of the Celtic language group, which is a part of the Indo-European language family. Irish is indigenous to the island of Ireland and was the population's first language until the 19th century, when English gradually became dominant, particularly in the last decades of the century. Today, Irish is still commonly spoken as a first language in areas of Ireland collectively known as the Gaeltacht, in which only 2% of Ireland's population lived in 2022.