What is correct for John in Irish Gaelic Seán or Eoin?

Both Seán and Eoin are correct spellings of John in Irish Gaelic, but they represent different pronunciations and historical influences.

* Seán: This is the more common and widely used spelling. It reflects a pronunciation closer to the English "Shawn."

* Eoin: This spelling is less common but still perfectly acceptable. It's closer to the original Latin form of the name, and its pronunciation is closer to "Owen."

So, neither is definitively *more* correct, just different. Choose whichever you prefer, or whichever fits the style of the context.