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| Ó Troighthigh | Trehy (Troy): líon beag: Tiobraid Árann-Cill Chainnigh. Deir de Bhulbh go raibh an chlann sa i gCorca Modhruadh ar dtús ach i dtaifid an 17 céad bhí siad in Éile Uí Fhógartaigh agus Uí Cairin, Tiobraid Árann. Tá an leagan Trihy le fáil in oirthear Chorcaí. Tá an sloinne bunaithe ar an bhfocal troightheach, saighdiúir coise. Is cosúil go bhfuil meascadh le Troy, sloinne Normannach a bhí tábhachtach i Luimneach. Chuige sin, féach de Treo thuas. |
| Trehy | Quite numerous: Kilkenny-Tipperary etc. Ir. Ó Troighthigh (foot-soldier). A sept who were located in Tipperary; they also occur as Troy. The Troy family of Limerick City were of quite different origin, being Anglo-Normans. IF. |
| Trihy | rare: E Cork etc. Ir. Ó Troighthigh. See Trehy. |
Parishes where a Treahy and a second surname married each other.
This list shows total Treahy Roman Catholic marriages by county.
Click on the county to see detail.