Joan,The Irish have a tendency to shorten names , in the case of Magheracloone most of the records in England that I've seen are variant forms of Marracloon and it's even worse when the first syllable is dropped as in Lisdoonvarna referred to locally as Varna. I would go along with Christopher's suggestion of Correvan, as the surname was to be found there too.Good luck,J.T.A,