Pat:
Welcome to Ireland Reaching Out!
Very few RC parishes in Co. Galway have records back to the first decade of the 19th century. Ahascragh for example has records starting in 1840 http://registers.nli.ie/parishes/0535 I did check Roots Ireland from 1798-1818 in Co. Galway and did not find a baptismal record for a Martin Corley or Curley with a father Daniel.
Have you considered autosomal DNA testing?
Roger McDonnell