Walsh of Castlebar

Searching for information about my great-grandfather,  Michael J. Walsh, born Feb. 16, 1866 in Lissaniska, Castlebar.   I believe his father was Patrick Walsh, born around 1825, also of Castlebar.

Michael immigrated to New York, USA, (year unknown), and married a Margaret D'Arcy,  who had been born in Urlingford, Kilkenny or Tipperary.  They were married in Poughkeepsie, New York on March 8, 1892.

My grandfather is one of their children, Paul Vincent Walsh, who was born Feb. 7, 1900 in Poughkeepsie, New York.  His siblings were named Agnes, Joseph, Francis, Vincent, Charles, Elizabeth and Margaret.

Any information than confirm and add to the above would be appreciated.  I will be visiting Ireland at the end of June, and would like to have as much information as possible beforehand.  Thank you!

Ellen Forlenza