Names aren't translated, they stay the same.
True, but the names have 'equivalents/cognates' Irish would be Eoin or Seán in Irish and Iain in Scottish Gaelic.
Irish (Gaelic) is Seán or Eoin; Scottish Gaelic is Iain.
John O'Mahony - Gaelic footballer - was born in 1937.
John Coleman - Gaelic footballer - was born in 1951.
John McEntee - Gaelic footballer - was born in 1977.
John Murphy - Gaelic footballer - died in 2009.
John Keenan - Gaelic footballer - was born in 1942.
John Dowling - Gaelic footballer - was born in 1930.
John Dowling - Gaelic footballer - died in 1998.
John O'Leary - Gaelic footballer - was born in 1961.
Scottish Gaelic is Iain;Irish Gaelic is either Seán or Eoin.
Eom? Possibly Eoin? It is a Gaelic form of John.
John Devine - Gaelic footballer - was born on 1983-06-13.