My Father's parents emigrated from County Cork (Millstreet) in 1895. Grandpa was Cornelius O'Sullivan and grandmother was either a Lenahan or an O'Leary. They wed in Manhattan in 1898.
My Mother's forebears were Eagan and Devanney out of Mayo. Mother's mother's father was Mike Devanney. I'm estimating that they left Mayo prior to 1890. U.S Immigration truncated O'Sullivan so I was born a "Sullivan", subsequently marrying an Irish-Welsh descendant named Parry.
I am more than delighted at your outreach. Over the years I've visited Ireland many times, including glorious Galway, and encourage my children and grandchildren to do the same.
Ireland Reaching Out
Michael Cusack House
25 Dunkelin Street