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 Robert Aberneth M 1849 +/- 4 yrs in Co. Armagh, I found 1 M rcd in 1849.
For Anne Hayes M ditto, I found 3 M rcds: 1848, 1849, and 1852. The 1849 rcd is a possible match.
Will leave it to you to find if the 1849 M rcds for each are in the same parish. If so, the M rcds are likely for your ancestors. A view of the detailed M rcds SHOULD show their parents' names, residence, etc.
Google the Foundation's name to lead you to this database. Pls post your search results to this genforum msg.