It sometimes takes the form Corry or Corra, especially in the northern counties, where in the few early records in which the name is found the prefix 'Mac' is usually substituted for 'O'.
The most numerous and well-known sept of Ó Comhraidhe is that of Thomond with their centre in County Clare.
In addition to the main sept of Ó Comhraidhe another of the same name was located in County Westmeath, where they were Chiefs of Moygoish.
In mid-nineteenth-century Antrim the main concentration of the name was found to be to the north of Ballymoney in the barony of Carey.
The majority no doubt are Ó Corra, descended from the sept of that name located in the Tyrone-Fermanagh country and numerous in central Ulster in the seventeenth century as the Hearth Money Rolls show.
The prevalence of the name Corry in Counties Waterford and south Tipperary in the seventeenth century might suggest that some of the O'Currys of Thomond migrated but this theory is not borne out by numerous mediaeval records which show that people called Cor and Corre were established in Counties Tipperary and Kilkenny as early as 1270 (Richard Corre was Bishop of Lismore from 1279 to 1308): this may well be an unidentified Norman name unrelated to Curry, for migration from Thomond to Ormond was unusual, though not unknown, before the fourteenth century.
However, in the mid 17th century at the time of Oliver Cromwell's campaign in Ireland, one of the major landowners in south Tipperary (Clonmel) was a John Corr of Toberhanny.
He is said to be descended from a Norman family Corre, that came to Ireland in 1171 at Crooke, County Waterford with King Henry II of England, alongside Theobald FitzWalter, later to become Butler, Earl of Ormonde.