If either died in Scotland, then their death certificates should contain their parents names, which is one way of establishing whether any birth you may then find is the right one. I looked for a death of a woman named Quinn, maiden name Loughlin, born c 1934, for the years 1952 to 2011. There’s none listed in Scotland, so either she is still alive, or she died after 2011 or she died outside Scotland.
If you can make out the groom’s mothers maiden name you could do a similar search for the groom’s death.