Thanks again Kim!!!
It is very good of you to go to so much effort, as regards looking up and sending all this information. I really appreciate it!!!
This particular Patrick Clarke must be the brother of Ellen Gallagher (née Clarke). The fact that his occupation is recorded as 'miller' is the clue. In the obituary of Ellen's husband, Richard Gallagher, there is also mention of other nephews called 'Clarke' at his funeral. They were called Thomas, James, Hugh, and Patrick Clarke, all of the Waterside, Derry city. I know for a fact that they were the sons of Hugh Clarke and Jane Mullarkey. Their father, Hugh Clarke, also had the occupation of 'miller'. This can't be just coincidence!!!
Hugh died at Mill Street, in the Waterside, Derry city, in 1886. My great great great grandfather, Thomas Clarke, also lived and died at the same address. Hugh Clarke is recorded as replacing Thomas at Mill Street in the 'Derry Almanac and Directory' and in the Valuation Revision Books. They must have been related, possibly Thomas was Hugh's father or his uncle, but as yet I have not been able to confirm this. I was unlucky that the civil marriages of Richard Gallagher and Ellen Clarke, and also of Patrick Clarke and Rose Anne Moore, were not registered, as the records would have given me the name of their father.
However, thanks to all the information that you have sent me I still have quite a few more leads to follow!!!
Best wishes,
Brendan