Have you added Brigid Butler to the Sixmilebridge Ancestors Roll Call? This will increase your chances of discovery.
Hope this helps!
I attach detail on Henry Butler - Magistrate - Sixmilebridge, Co. Clare - 1825 - Tithe Record and c1850 - Griffith's Valuation, who is the only
person of that name found in the parish of Kilfinaghta with property interests. He was a local landlord.
No record found for a Bridget Butler c1830.
There are a number of families named "Butler" in County Clare, many who are recorded close to Sixmilebridge, so you will need to have some more
information, including religion - Roman Catholic or Church of Ireland.