Thomas Tobin & Catharina Fitzpatrick, Waterford & Lismore> Carrick-on-Suir 1808

Thomas Tobin and Catharina Fitpatrick had a son, Thomas, born 7 Jan 1808 according to the Catholic Parish Registry.  Witness/sponsors were Guliolmo Mullins & Anna Healey/Healy.  Thomas was my 2nd ggf and I'm trying to find a connect between Thomas, Catharina and the witnesses to hopefully further verify I have the right Thomas Tobin.  He arrived in Savannah, Georgia Dec 1828 and on his Oath of Intent he signed his name Thomas T Tobin, age 21, from Tipperary.  This is all that is know of his past.  After many years of searching I came across this baptismal record and all seems to match (age, location) but I'm trying to futher support my theory.  I believe Catharina was born about 1788.  Any help will be appreciated.  Marion Tobin Daniel