Ireland

Oldcourt, Wicklow, Leinster → Oldleighlin, Leinster → Oldtown, Fingal County, Leinster → Omeath, Leinster → Onaght, Connacht → Oola, Munster → Oran, Connacht → Oranmore, Connacht → Oristown, Leinster → Ormond View, Connacht → Oughter, Leinster → Oughterard, Connacht → Oulart, Leinster → Ourtnagapple, Connacht → Ovens, Munster → Owenduff, Mayo County, Connacht → Paddock, Munster → Painestown, Leinster → Palatine, Leinster → Pallas Grean, Munster →