Hi Ellen
I'm a genealogist based in Dublin. I know the layout of Mount Jerome and the cemetery records well as I often do work there. I'd be happy to look up your names next time I'm at working the records office. I may not get there in the coming week (week of Mon 7 Sep) but should get there the following week at the latest.
Mount Jerome is an old cemetery (opened in 1836) and much of it is in poor repair. I have to tell you that while the records are good, it's common to find that any headstone is now missing (and often there wasn't one present at all).
There was a perpetuity/perpetual care system in place, whereby, for an extra fee, a level of maintenance was to be carried out longterm. Unfortunately, 'longterm' seems to have expired ....
However, where perpetuity was arranged (and it often wasn't), the perpetuity records show a list of all burials carried in the particular plot up to 1972.
I'll come back to you as soon as possble.
best regards
Gerry McMahon
Dublin, Ireland