Donna and I went to the Registry of Deeds where I was able to obtain copies of the memorials (the transcript of the deed that was copied into the register) for the 1813 lease, the 1930 purchase, and the 1951 sale. The process was very easy. First, I checked the Name Index List which gave me a volume for each group of years. The name index refers to the Grantor. In my case, the initial grantor was the Earl of Kilmorey.
When I found Bannon as the grantee, I noted the year, page and volume and moved to the Abstract Book. This allowed me to confirm I had the correct person by cross referencing the townland.
The abstract book gave me the number of the memorial, which has been digitized and they were able to easily print a copy for me. The cost to do the searching and to print as many memorials as needed is £10.
These records trace four generations of the Bannon family to include Thomas, Patrick, John and Edward. Tomorrow I'm off to Newry, the city nearest Upper Fathom, to meet with local Bannon descendants and contiunue my research.