Pick a county to see the surnames on the atlas that belong to it, each linked to its own page.
A name is listed under a county because its sourced entry, nearly always Patrick Woulfe's Irish Names and Surnames (1923), names that county as the family's homeland or as a place where the name was found. It is not a record of where people with the name live today. Families moved, some names arose separately in several places, and one surname can appear under three or four counties. The counts below show how many of the 399 names on the atlas name each county, not how common they are there.