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| MacCaghy | rare: Monaghan, etc. Ir. Mac Eachaidh, see Mac Caughey. |
| MacCaighy | Very rare: Antrim. Ir. Mac Eachaigh (well-horsed). |
Parishes where a McCahy and a second surname married each other.
This list shows total McCahy Roman Catholic marriages by county.
Click on the county to see detail.