Hello Joanne, I have ancestors who emigrated from Killeagh during the 1840's. My ancestors assumed the name O'Hearn, a variaition of Ahearn. I also have an ancestor named Johanna Barry whos' daughter married into the O'Hearn family, but i am sure there is no connection between your Jonanna and my Johanna. My gggrandmother Johanna (O'Connor) and her husband Michael Joseph Barry are my only ancestors for whom i am clueless to their Irish origin.
My O'Hearn ancestors, i believe, arrived in New Haven Connecticut. They worked their way to Troy, NY and my gggrandfather (Patrick O'Hearn sr.) moved further into the Adirondacks, attracted by work building railroads from the early 1850's until about 1867. In 1872 the family left Glens Falls, NY for Gardner Massachusetts. Patrick's wife Mary Driscoll (also fron Killeagh) died in 1867 and her brother (Daniel) lived in Gardner Mass. Patrick was able to work building the Hoosac Tunnell for a few years. Patrick would go off to work on the tunnell for about three weeks at a time, while his inlaws supervised the younger O'Hearns in his absence. The family remained in Gardner into the 1980's, i don't think any remain today, but they are still nearby. The family was very active in the furniture mfg. business and George O'Hearn founded a furniture factory that was in business from 1922 to 1970, my mothers home is filled with O'Hearn furniture.
If we have any connection it should be through the O'Hearn/Ahearn family. My gggrandfathers siblings were John, Philip, William, Cornelius, Margaret, and Bridget. I believe the five siblings in America always lived around Troy, NY or further north into the Adirondacks. The brother Philip remained in Ireland and had three sons and two daughters. Going back one more generation O'Hearn married Mead and Driscoll was married to Lynch. I was lucky to find a bunch of reaearch on this family done by my grandmothers cousin Dorothy O'Hearn, that she likely started around the 1940's. This O'Hearn family has a longevity gene. GGGrandfater Patrick lived to 103 yrs, My grandmother lived to be 100yrs 3 mos, and most of her cousins and siblings lived into their ninties.
If any thing rings a bell feel to share JLOHOULSatgmaildotcom