An estimated 90% of Appalachia's earliest European settlers originated from the Anglo-Scottish border country—namely the English counties of Cumberland, Westmorland, Northumberland, County Durham, Lancashire and Yorkshire, and the Lowland Scottish counties of Ayrshire, Dumfriesshire, Roxburghshire, Berwickshire and Wigtownshire. Most of these were from families who had been resettled in the Ulster Plantation in northern Ireland in the 17th century, but some came directly from the Anglo-Scottish border region. In America, these people are often grouped under the single name "Scotch-Irish" or "Scots-Irish". While various 20th century writers tried to associate Appalachia with Scottish highlanders, Highland Scots were a relatively insignificant percentage of the region's early European immigrants.