A townland is a peculiarly Irish land division which goes back a long time. It is the smallest administrative division and can be as small as a few acres or as large as 7,000 acres. Better land was divided into smaller townlands. Townlands for all counties can be searched for on The IreAtlas Townland Database
To locate details of North Tipperary Catholics Parishes go to The Irish Times site. Click on a parish for details of its records. Hold the mouse pointer over the parish to see variant names. Click on a county name to view its parish map.
The Roman Catholic Parishes of County Tipperary are paired with their Civil Parish names in this site hosted by Rootsweb.
To find any Irish Townland or placename on The Irish Times site, key in the Townland and it will give you the county, Civil Parish and Poor Law Union.
You can also use the SeanRuad IreAtlas Townland Database to locate any Irish townland. By entering a Townland and a County, it will return all lines that contain the requested Townland and the requested County. You can search for individual townlands or look at all the townlands in a specific parish or Poor Law Union etc. It is case sensitive.
An excellent book for Irish family history research is the “Index to the Townlands, and Parishes and Baronies of Ireland” published in 1851. This has all the townlands that were used in Griffith’s Valuations. It has the advantage over the online database if you are unsure of what you are looking for. Amazon.com often have copies at reasonable prices or much cheaper than through specialist genealogy shops. I use this book frequently.
Many of the townland names are the same today so a search of Google maps can be useful to see where the townland is and to calculate distances to other places.