Yes, this is the correct David Archer. I haven't looked at the film, as the index may have a slight error, but I believe that the film is of the same document that I have a copy of from Ireland, which is from the official baptism registry.
It is David and Bridget that I am looking for more information about. There must be a marriage document somewhere. Also, I have not found any siblings to their son David, so this would be something to look for as well.