The constituency covered the county electoral areas of Ballina, Killala and Swinford, in the administrative county of Mayo.

Between its junction with N17 at Shanvaghera and its junction with N17 at Ballyfarnagh via Knock all in the county of Mayo.

By his own account, he was "the first Englishman (Anglo-Irish) that in the memory of man settled himself to dwell in the county of Mayo."

(1828) Second account of a mineralogical excursion to the counties of Donegal, Mayo, and Galway.

It is most common in the Irish counties of Mayo and Galway but particularly County Cork, and within England, East Anglia, especially Norfolk.

Morans were a respected sept of the Uí Fiachrach dynasty in the western counties of Mayo and Sligo.

The constituency covered the county electoral areas of Castlebar, Claremorris and Westport, in the administrative county of Mayo.

"The county of Mayo."

The largest Gaeltacht areas are in the counties of Kerry, Cork, Galway, Mayo, Donegal, Waterford and Meath.

For centuries they were the leading sept of the northern Ui Fiachrach, a tribal group that occupied the modern counties of Mayo and Sligo.