Viewed several of the rcd's on IFHF site.Patrick Gavin bapt.1845 Kilcummin- Oughterrard looks very promising where Stephen is listed as father. Found a Stephen bapt 1818 in Oughterrard that would fit in time line, as well as a marriage for Stephen in 1840 in the same location. Next going to look at Griffith's where there is a Stephen in same time frame and location.
Tried to locate a Martin Gavin ( bapt 1834, 1859)to be a sibling of Patrick...neither had Stephen as a father.
Tried to get concrete location of Paristown, as said to be birthplace of Bridget Flannagan. Looked in Co. WestMeath. Found a possible bapt record for 1849.No records for Bridget with a husband of Patrick though.
Will continue to search. Greatly appreciate your help, thanks so much! Records are wonderful on this site, wish you could view for free though, so many I want to investigate.... but pay to print.