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| Crahan | Very rare: Meath. Ir. Ó Carráin, Mac Criomhthainn. The former relates to Leinster, the latter to Munster where it is usually MacCrohan. In some cases changed to Curran. SI. |
| Crehan | Quite numerous: Galway-Mayo-Roscommon and Limerick-Kerry-Clare. Ir. Ó Croidheáin in Connacht; in Munster it is synonymous with Crean, q.v., itself derived from Curreen so Ir. Ó Corraidhín, Curraoin. See also Ó Creacháin. |
| Mac Corraidhin | Crean, Curran & rl.: líon beag: Connachta thuaidh. Clann de chuid Uí Fiachrach in anallód. Tá Mag Corraidhin orthu leis an ngalldú Mac Gurren,-in agus iad suite i mBreifne & Fear Manach.SI. |
| Ó Créacháin | Crehan: líon beag: Connacht. Clann de chuid Uí Fiachrach, measctha anois le Ó Croidheáin, q.v.IF. |
Parishes where Creahan and a second surname are both baptised.
This list shows total Creahan Roman Catholic baptisms by county.
Click on the county to see detail.