Pronounced like Owen, this was the name of several early Irish kings and saints, as well as a celebrated --Ulster hero. Often spelled with two 'n's in Scotland, it can be anglicized as Ewan, Ewen, Euan, Owen or Hugh--or Eugene.
Eoghan Ruadh Ó Néill (OwenRoeO'Neill), commander of Irish forces in the Confederation of Kilkenny Eóghan of Argyll, Scottish nobleman and soldier
Eoghan Corry, Irish journalist and historian
Eoghan Harris, Irish politician
Eoghan Hickey, Irish rugby player
Eoghan Quigg, Irish singer