I searched the Irish Family History Foundation's online database. It appears Hugh Rogers B rcd is in the database B 1851. For a marriage of his parents Mathew and Ann, I can find an M rcd for Mathew in 1845, but not a matchingrcd for Ann Carolan.
If you want to take a chance that only the groom's event was rcd'd and not the brides's, the 1845 M rcd SHOULD show the names of the parents. This would be a rare, but not unheard, event.