Labhrás wrote:
gortahork wrote:
You said Corraidhín without the Ó wouldn't be correct, is that in the sense that it wouldn't have been correct when patronymic naming was still the norm or do you mean it still wouldn't be correct now?
Still so.
gortahork wrote:
For example, why would "Curran" as a last name - super common all over the country - be correct, but not the older Irish spelling?
The Older Irish spelling is correct.
gortahork wrote:
Is it a grammatical rule in Irish that makes it incorrect or do you mean incorrect in the sense that it was originally used as "Son" or "Grandson" of the first name "Corraidhín" so incorrect in that it would be using a first name as a last name?
First names aren't used as last names in Irish without Mac or Ó (except foreign names).
That's not a grammatical rule but a habit.
No one has a surname "Néill/Niall" or "Súilleabhá(i)n" but Ó Néill and Ó Súileabháin.
Ó and Mac are pronounced quite weak in native Irish, often just "uh" or "uhk", but they are always there.
Corraidhín is a first name, Ó Corraidhín is a surname.
Actually, just read an interesting article in the Irish Times about the subject:
In the 1600s, when English rule intensified, the prefixes O and Mac were widely dropped because it became extremely difficult to find work if you had an Irish sounding name. However, in the 1800s many families began reinstating the O and Mac prefixes. Occasionally, the wrong prefix was adopted, particularly adding an O when the original prefix was Mac.
Curiously, putting back the prefix hardly ever occurred with some surnames. For example, originally Murphy was Ó Murchadha, but rarely appears with the prefix. Murphy has been the most popular Irish surname for at least a century, with the highest concentration now in Co Wexford. But more Murphys live in Britain than in Ireland, with the highest concentration in Liverpool. There are more than 300,000 Murphys in the US, compared to 55,000 in Ireland.
(
https://www.irishtimes.com/culture/book ... 20prefixes.)