Hi

I have looked at my certificate for you

mine says
at The Registry Office in the district of Westbury on Severn in county of Gloucester

The Registrar is hard to decipher possibly H.N? MORSE, definately Morse
Superintendent Registrar undephered then possibly F and then possibly Carter?

my Aunt who died some years ago who started my interest in this said they married at Newnham and so did my own father.

Hope this helps in your own search