Powerstown is about 3 miles north west of clonmel, Poulnagunoge St. Mary’s is in waterford county, but only about a good spit outside Clonmel, the river Suir runs through the town, on its north bank is county Tipperary, on its southern bank is county Waterford, however and I'm hoping not to confuse you further, Kilsheelen parish, and st Mary's Clonmel both serve portions of both counties, hence the births, marriages, and deaths could be registered in Clonmel tipperary, but those recorded could have been living just across the river in county waterford.