| Ó Casáin | Paterson: líonmhar i gConnachta. Saobh-aistriú ar "casán" = conair. Bhain an chlann sa le Uí Maine (Gaillimh). Brí cheart: cas = catach nó crom. I gCorcaigh, tá Cashman ar an sloinne seo agus i gCiarraí, Kissane. |
| Ó Cosáin | Patterson: féach Ó Casáin. Saobh-aistriú i gConnachta. |
| Paterson | Quite numerous: Belfast, Dublin etc. See Patterson. |
| Patterson | Very numerous: all areas, especially Ulster. A common name in Scotland and England, "son of Patrick". In Connacht, it has been substituted for Ó Casáin (casán is Irish for "path", but no connection with the surname). SI. |
| Pattison | Quite numerous: Belfast-Antrim-Tyrone etc. Variant of Patterson. |
Parishes where Paterson and a second surname are found together
Click here to see all variants on a single map
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