I am maybe of some help to you. While it may be a ling shot there seems to be two distinct Corr families in Ireland. After long research I have the following (briefly) information.
The Corr's in the Southeast of Ireland came over with the Anglo-Norman invasion of Ireland and held lands in Tubberhany/Toberhany in the town of Clonmell (Clonmel presently) in Co. Tipperary. They were Landed Gentry until the confiscation of lands by the cromwellian butchery of Ireland in the late 1640's. Given the option to either go to Hell (be killed) or be transplanted to Connaught. John Corr with his retainers of about 141 people sided with the Earls of Ormonde who at the time were allies and peers, and in return for their loyalty were granted lands in Cuffesgrange and Callan Co. Kilkenny, when the Ormondes were restored to power. And while they did not have their lands in Clonmel returned to them the lands they were given were seen as compensation. The Corr family have remained in Cuffegrange to this very day, (my own father was born in the Corr homestead in Cuffesgrange. In the late 1800's and early 1900's some of the family moved to America where Frank Corr (descended from the Callan Corrs, became the 36th Mayor of Chicago). I have been in contact with this branch of the family while doing my research. While I do not want to bore you with further details, If you would like to know more don't hesitate to contact me on email@example.com .