I searched the Irish Family History Foundation's database. It contains 12,000,000 surviving rcds for abt 65% of Irish counties. Cnty Meath rcds were just added to it. Catholic rcds are very good; Protestant rcds less so.
For Hugh Carpenter B 1830 +/- 4 yrs, I found 0 B rcds. For Hugh Carpenter M 1854 +/- 4 yrs, I found 0 M rcds. For Hugh Carpenter M 1867, I found 0 M rcds.
B/M/D registration was civil after 1863. His 2nd marriage should have been rcd'd. Visit the General Register Office at http://www.groireland.iehttp://www.groireland.ie for this marriage rcd and the B rcds of his children.
Google the Foundation's name to lead you to this database. Best of luck. Pls post your search results to this genforum message.