Hi Liz,
Ah, thank you for clearing up on the RUC matter--it does not hurt to ask for the papers on Ernie but I am not sure if they would allow you to have an access to it because you are not a direct descendant?
By the way, re: signatures on birth certs you described to and your comment re: your birth cert helped me a lot. I understand what you are trying to say--guess what? your cert does not have a original image of your birth entry because they scanned the image off the copy of the original register book. The original register book is held at the different location.
My birth cert does not even show my parent's signature either--it was actually handwritten by the registrar by himself.
If the birth entry showed it was signed and does not show any "her/his mark of"--it means a person was able to sign.
Why don't you try and get your grandparents' death certs--just to see where they were living?
How old was that LDS submission you saw on the LDS site on your grandparents' deaths? Perhaps someone may be living and possibly assisted you with getting further information? (I will check it out for you after I am done with this reply.)
Do not give up yet--we will get there somehow!!
I have another thought--your Annie may have re-married for the second time which make it a bit harder for us to find her? We just need to follow Lewis Houston. Also, that Annie and Lewis could have gotten married in Dublin--a good distance away from their objected parents?
Have you considered about the emigration aspect? To Canada or America or even Australia without you knowing it.
Kind regards,
Tees