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| Hennell | Very rare: Dublin. Ir. Ó h-Ionghaile, i.e. as Hennelly, q.v. |
| Hennelly | fairly numerous: Mayo-Galway etc. Ir. Ó h-Ionghaile. Woulfe considers it a variant of Ó Fionnghaile - the initial "F" aspirated in speech. SGG. |
Parishes where Hennell and a second surname are both baptised.
This list shows total Hennell Roman Catholic baptisms by county.
Click on the county to see detail.