The Irish Department of Foreign Affairs (DFA) confirmed it was taking measures to prevent abuse of citizens’ rights to secure a passport in their Irish-language name to conceal their identity.
The measures to prevent identity fraud involve including the person’s birth name in English on the passport until a citizen can prove they have been using the Irish-language version of their name for two years…

Ah anseo.

Australians fear Irish using names ‘as gaeilge’ in visa fraud (Aideen Sheehan, Independent.ie)