The Ulster Scots (Ulster-Scots: Ulstèr-Scotch), commonly known as Scots-Irish outside of Ireland, are an ethnic group in Ireland, found mostly in the Ulster region and to a lesser extent in the rest of Ireland. Their ancestors were mostly Protestant Lowland Scottish migrants, the largest numbers coming from the "Border Reivers" culture of the Scottish Borders, from Galloway, and Ayrshire, although some came from further north in the Scottish Lowlands and also to a lesser extent from the Highlands.