The grandson of Big John Meehan from Sligo, Mary Ellen McLaughlin-Keane from Galway, Bridget Munnelly from Mayo, and Matthew Smith from Cavan ended up with the least recognized Irish name of them all. I can’t begin to tell you how many times, I’ve been asked, “Smith, huh! English … right?” When I meet up with my ancestor Mac an Gabhann—the one who anglicized our family name to Smith—he…