Rathgormuck, a parish, in the union of Clonmel, barony of Upperthird, county of Waterford, and province of Munster, 3 miles (S.S.W.) from Carrick-on-Suir; containing 2498 inhabitants, of whom 130 are in the village. This parish, which takes its name from an ancient rath, is situated on the confines of the county Tipperary; comprises 17,966 statute acres; and contains a constabulary police station.
It is a vicarage, in the dioceses of Lismore, forming part of the union of Mothel; the rectory is impropriate in the Duke of Devonshire, and the tithe rent-charge is £306.5.8., of which £180.18. are payable to the impropriator, and the remainder to the vicar. In the Roman Catholic divisions the parish is part of the union of Mothel, or Rathgormuck, and contains a chapel.