You seem to have had access to rcds which either didn't survive, or haven't been digitized. From your post, I wasn't quite sure what you were asking. I assume it was info on your direct ancestry.
I searched the Irish Family History Foundation's database. It contains 12,000,000 surviving rcds for abt 65% of Irish counties. Rcds are increasingly sparse B4 1840, rare B4 1800.
For Mary Moran M 1850 +/- 2 yrs in Co. Leitrim, I found 6 M rcds: none in the yr 1850. Using an "all Ireland" search, I found 55 M rcds.
For Patrick Geheran M ditto, I found 0 M rcds. Using an "all Ireland" search, I got the same result.
Since there aren't matching M rcds, it looks like rcds for this event didn't survive, or haven't been transcribed.
For Mary Moran B 1828 +/- 4 yrs in Co. Leitrim, I found 5 B rcds: 1 in 1832 in Kiltoghert RC parish. Data about the parents from her marriage rcd MAY exist in your rcds and can be used to validate the rcd.
For Patrick Geheran B 1826 ditto, I found 0 B rcds. Using an "all Ireland" search, I found 1 B rcd in 1826, Co. Kildare. Without a parent's name, placename, etc., it would be difficult to validate this rcd.
Google the Foundation's name to lead you to its database. Register, opt to be notified as rcds are added and browse. Pls post your search results to this genforum msg.