|Courtney||numerous: Kerry, Cork, E Ulster. Ir. O Curnáin and Mac Cuarta (Ulster). However it is a Norman name, Courtenai, which must be the origin of some of the names.|
|Curnane||Very rare: Kerry. Ir. Ó Curnáin. Now generally anglicised Countney. Curnán was a personal name - it survives in Kilcornan, Limerick.|
|Curneen||rare: scattered. Ir. Ó Cuirnín. A literary family of Breifne, related to the O'Rourkes. SGG.|
|Curnyn||Very rare: Mayo. Synonym of Curneen.|
Parishes where Curnin and a second surname are found together
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