| Caddoo | rare: Tyrone etc. Ir. Mac Conduibh (black hound), the subject of many anglicisations such as: Caddow, Mac Adoo, Mac Niff. The original name is of Connacht & W Ulster. |
| MacAdoo | Quite numerous: Ulster generally, Cork etc. Ir. Mac Conduibh, "black hound" and modern Mac Connuibh. This name also appears as Cunniffe which is more numerous and associated with Connacht. See also Caddoo and Mac Niff. MIF. |
| MacEneff | rare: Dublin etc. Ir. Mac Conduibh. See Mac Endoo. |
| MacEnuff | Very rare: Newry (Down). Variant of Mac Endoo, q.v. |
| MacNeff | Very rare: Down. Ir. Mac Conduibh. See Cunniffe. |
| MacNiffe | Quite numerous: Leitrim-Sligo etc. Ir. Mac Conduibh. See Cunniffe. |
DEDs where Caddoo and a second surname are found together
This list shows total 1901 Caddoo households by county.
Click on the county to see detail.
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