In researching my family's journey from Cork to Pittsburgh, I've noticed a concentration of Cork names (Barry, Crowley, Deasy, Sullivan, McCarthy, Murphy, Driscoll, Regan, Madden, etc.) is a very small area off Pittsburgh's 5th Ward. It consists of Webster Ave., Bedford Ave, Denny's Alley, Strawberry Alley, Fountain St. and Penn Avenue. I have found references in historical studies to a "Little Galway" and a "Little Clare" in Pittsburgh, so I wonder whether there was a Little Cork as well.
I would be interested in corresponding with others whose families left Cork for Pittsburgh to see if there are any connections.