Surnames are sorted in the order of popularity,highest being at top.
You can search Alphabetically like "Starting with A"
Irish surnames are often influenced by Ethnicity,language and religion.
Ethnic Groups: Irish 82.2%, Irish travelers 0.7%, other White 9.5%, Asian 2.1%, Black 1.4%
Languages of Ireland:
Main Language: English, Irish (Gaelic) 39.8%
Religion:Roman Catholic 78.3%, Church of Ireland 2.7%, other Christian 1.6%, Orthodox 1.3%, Muslim 1.3%.
If you are looking for Irish surnames, these factors may affect the surname you choose.