Thank you David, that's much appreciated.
I think the Judith Lynn Smith who married someone called Shaffer was living in Vancouver, Washington.
Ancestry came up with a hint on U.S. Public Records Index, Volume 1 with the name Judith L Moore
there was another record for the same address on the U.S. Public Records Index, Volume 2 with the name Judith L Shaffer-Moore
So I think it is possible that they are the same person.
I have not been able to find a marriage record though.
So confused, I am not very good at this lol