Cognomen Eoghain (Eoghain 
) , all over the world, is an extremely rare last name. Much more frequently, Eoghain is the forename as well as the last name.
Ryan, Maclean, Maguire, Carroll, Collins, Bedford, Kilbane, Delaney, Lebioda, Jarrold, Johnson, Horgain, O'Brien, O'Neill, O'Hanlon, Mcginley, Sherrard, Sherlock, Anderson, Browning, Grayling, Hamilton, O'Hara, Fiddes, Finnan, Holden, Mckee, Cooke, Kirby, Davey, Doyle, Dunne, Duddy, Ohara, Meakin, Murphy, Kenneally, Mullen, Sheehy, Connor, Cooper, Clarke, Clavin, Powell, Phelan, Reilly, Devine, Hanlon, Sherry, and Fitzgerald