It is inconsiderate of you not to give the names of the children, so that other researches can check if Jeremiah and Mary are in their notes. Why should I go to the trouble of looking these people up if you don't give sufficient information for me to be able to identify them?
I have a database of 5 parishes south of Cork City,and do have at least one Jeremiah and Mary who seem to meet your criteria, but I'm not going to give you the infomation unless you do your part.
Frank Thompson / NYC