Thank you for your post to the Ireland Reaching Out message board. As you appear to have ancestral connections to both Ballyvaughan and to Quin parishes, you should definitely take a look at the Clare Library website. This website has a number of transcriptions of documents including parish registers which you may find very useful. The Quin registers are online there and I note that there is a familly of Connor/Cornelius Ryan and Mary Kett who resided in Feighquin pre-famine. In addition, the parish registers are online through the National Library of Ireland,and they can be viewed for free. As you will be traveling to Clare, you should definitely stop into the Local Studies Centre in Ennis which is the county-wide repository for local historical and genealogical information in County Clare. This building is located next to the DeValera Library. Please keep me posted as to your travel plans, and if I'm available, I can meet you. I have some Quin connections myself and know of several individuals who may be able to assist.
Clare Library Link: http://www.clarelibrary.ie/eolas/coclare/genealogy/genealog.htm
https://registers.nli.ie/parishes/0613 Ballyvaughan parish register link.
Quin parish register link: https://registers.nli.ie/parishes/0774