Hi, if you give us some names, we may be able to help, a fresh pair of eyes.
I have an ancestor who wed in 1848 in Dublin, St Paul's. it was a non Catholic marriage, and civil reg of them begun in 1845.
Since it looks like you're doing research in the UK maybe you could help me break through another brick wall. My great grandfather, George Richard Holahan, is said to have been born in Manchester. My research of US Census records show his year of birth between 1858 and 1862. His parents came from Ireland and Lancashire was probably a stopover before coming to the US. I have searched Freebmd.uk, Lancashirebmd.org.uk, and Lan-ops.org.uk to no avail. There have been several records I have ordered that looked promising only to find the parents were not my George's parents. Any help in this regard would be much appreciated!