interesting about the irish in america and the cleveland irish:
Certain family names seem to keep reappearing among the Cleveland Irish and, at the same time, other Irish family names, somewhat common elsewhere, are seldom to be found here. At first glance this phenomenon seems baffling to the non-Irish. But the explanation is rather simple:
The vast majority of Cleveland's Irish have their family origin in County Mayo in the west of Ireland.
For reasons that can only be explained by the clannishness of the first immigrants who came out to America during the two great famines (1845-53 and 1874-79), it seems apparent that some people from one county decided to go to one inland American city and others to another.
Chicago, for example, was settled by people whose names indicate they were almost exclusively from County Galway.
New York is populated by Irish from Cork, Tipperary and Killarney;
and South Boston by people from Wexford and Rosscommon.
The pattern of settlement by the Irish in the United States followed to a remarkable degree the clannishness of the counties in Ireland.
more:
http://www.clevelandmemory.org/iac/excerpts/Irfrom.html
https://case.edu/ech/articles/i/irish