Ryan + Shea/O'Shea

I'd like to find out more about my Shea and Ryan line.I've traced it back to John James Shea/O'Shea born around 1786(possibly November inClogheen)and later married Joanna Hickey. They had a daughter born in 1818, Julia, and she married Andrew D Ryan of Graiguenamanagh,Kilkenny,then Julia and Andrewimmigrated to the U.S. sometime after 1845. I'd be grateful for help tracing the line of O'Shea or Ryanfurther back or tolocations where I could visit.