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| Heslin | Quite numerous: Cavan-Longford-Leitrim. Ir. Ó h-Eislin, properly Ó h-Eisleanáin who were a sept of Leitrim. Possibly connected with éislinn, flaw, defect. MIF. |
| Ó h-Eisleanáin | Heslin: tá an leagan sa giorraithe go Ó h-Eislin anois. |
| Ó h-Eislin | Heslin: líon beag: Breifne (Cabhán, Liatroim agus máguaird). Bhain an dream sa le Maothail (Liatroim) riamh agus is ann atáid fós. MIF. |
Parishes where Heslin and a second surname are both baptised.
This list shows total Heslin Roman Catholic baptisms by county.
Click on the county to see detail.