Mayo, county in the province of Connaught, western Ireland. Mayo is bounded by the Atlantic Ocean (north and west) and by Counties Sligo (northeast), Roscommon (east), and Galway (southeast and south). Castlebar, in central Mayo, is the county town (seat
Galway, county in the province of Connaught (Connacht), western Ireland. It is bounded by the Atlantic Ocean (west) and by Counties Mayo (north), Roscommon (north and east), Offaly (east), Tipperary (southeast), and Clare (south). The county seat, Galway
Roscommon, county in the province of Connaught, north-central Ireland. It is bounded by Counties Sligo (north), Leitrim (northeast), Longford and Westmeath (east), Offaly (southeast), Galway (southwest), and Mayo (west). The town of Roscommon, in the cen