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| Hassan | Quite numerous: Derry etc. Ir. Ó h-Osáin, os, a deer. A name long associated with Derry and Tyrone, also, occurring as Hasson, Hassen, Hassin, all in Ulster. SI & SGG. |
| Hassen | rare: Ulster. See Hassan. |
| Hasson | fairly numerous: Derry etc. See Hassan. |
| Hessin | rare: Belfast, Tyrone. Possibly a variant of Hession, q.v. |
| Ó h-Osáin | Hasson: cuíosach líonmhar: Doire & rl. Sloinne Ultach riamh. Fréamh: os = fia. Comhchiallmhar le h-Oisín. |
Parishes where Hesson and a second surname are both baptised.
This list shows total Hesson Roman Catholic baptisms by county.
Click on the county to see detail.