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| Aughey | rare: Belfast-Portadown. Ir. Mac Eachaidh. see also MacCaughey. SI & SGG. |
| Caughey | numerous: Down etc. Ir. Mac Eachaidh. Variant of Eochaidh, an ancient personal name. However, MacLysaght remarks that it has been used for Mulcahy in Down. SI. |
| Mac Eachaidh | Mac Caughey, Mac Cahey: líonmhar: Tír Eoghain & coiteann in Ultaibh. Ón ainm Eachaidh a bhí an-choiteann anallód. Leagan eile: Mac Eachadha. Féach Mag Eochadha, leis. |
| MacCahey | fairly rare: Monaghan etc. Variant of Mac Caughey, q.v. |
| MacCaughey | numerous: Antrim-Tryone, Ulster generally, Louth, Dublin etc. Ir. Mac Eachaidh, from first name Eachaidh, horseman. |
Parishes where a Caughey and a second surname married each other.
This list shows total Caughey Roman Catholic marriages by county.
Click on the county to see detail.