Dia daoibh,

Táim ag lorg cabhair le conas an ainm 'Earnán' a rá; tá beagáinín eolais ar-líne - ach nílim ro-chinte cé chomh cruinn is ata sé.

Ear-nawn?
Ur-nawn?

Ag smaoineamh faoi mar ainm linbh!

Go raibh mile!

ag lorg cabhrach (genitive)

Earnán is pronounced /ar'nɑ:n/.

It is pronounced as if "arnán". The e has no effect in this word. The same can be said of all words in ea- and eo-.

You can get a clue from the three dialectal pronunciations of earnáil at https://www.teanglann.ie/en/fuaim/earn%c3%a1il, although you have to change the slender l for a broad n to get it exact.



I don't know what this is meant to mean.

Dia dhíbh,
Tá cabhair á lorg agam i dtaobh conas an ainm "Earnán" do r(e)á. Tá beagáinín eólais ar líne air, ach nílim ró-dheimhnitheach cad é an cruinneas atá sé (atá ann??).

I'm not sure if an ainm Earnán is right. Do you need the definite article there? Maybe, because the definite quality of ainm is shown by the Earnán, you don't need the article?

Names (as such) are indefinite in Irish:

Is Earnán é. = He is (an) Earnán, he is named Earnán
gur Earnán is ainm dó = that Earnán is his name

and so:
an t-ainm "Earnán" = the name "Earnán"

but:
in ainm Earnáin = in the name of Earnán


Féach:
Níor neamhoiriúnach an t-ainm 'Fianna' le tabhairt, ina n-aimsir féin, ar bhuíon a bhí ceaptha ar an namhaid iasachta a dhíbirt as Éirinn. (P. Ó Laoghaire)
'Fianna Éireann' a shíolraigh an t-ainm 'Fíníní". (P. Ó Laoghaire)
Tá an t-ainm Rinn Oiriún (Oireamhan) ar scoth i Loch Coirib in aice le Gleann Iar Chonnacht . (T. Ó Máille)
Níl a fhios agam cé as a dtáinig an t-ainm Aill na Croise ... (L. Mac an Iomaire)

Yes, you're right Labhrás on the point under discussion here.

Your quotations from Ua Laoghaire are not accurate, however. he wrote:

Níor neamhoireamhnach an ainm "Fiana" le tabhairt, 'n-a n-aimsir féin, ar bhuidhin a bhí ceapaithe ar an namhaid iasachta do dhíbirt a h-Éirinn.

Ua Laoghaire did not use the spelling Ó Laoghaire, and it is disrespectful to disregard this. It is the norm to use the spellings that people use of their own names. If you read any academic paper, e.g. in Éigse, you will see the bibliographies have names with Ó and names with Ua, using the form that the person himself used.

Earnán is ainm do. This is not an example of indefinite use. This is an example where the definite article is not given where the noun is contextually defined. Ainm is a definite noun in this sentence. Compare sentences like Íosa Críosa is Tiarna orainn, where tiarna is a definite noun.

I used examples from corpas.focloir.ie.



My point was: "Earnán" is an indefinite noun here.

OK. I see. Strange that the corpas would quote a native speaker writing in 1915 as writing in the supposed Official Standard. No other country treats its heritage in this way.