I've looked through my paperwork this morning and can only think I must have been thinking pre-1937 as I don't have a marriage certificate dated before 1837, the ones I have are copies of Parish Records. I can only say I got utterly confused (it's an age thing) and apologise to you all as you were right all along. Sorry, too, to B65. I hope you'll accept my apology. If I could bury my head somewhere, I would!
Chris