You may have seen this already but on www.familysearch.org there are records of a Corcoran family that seem to match the family you are looking for. Baptisms/Births of Kate Anne 1876 Sarah Jane 1878 John 1880 Parents John Corcoran Jane Atkinson.
Addresses are given as Finniol Tipperary and Borrisokane Tipperary. It is possible that Finniol is a mistranscription of Finnoe which is just over a mile from Borriokane. Neangh would be the nearest reasonable sized town.