Hi rosie99.
" "

That's me speechless! How on earth did your find her? We've tried all sorts and found nothing. What a Star!
Yes this:
Marriages Jun qtr 1889
Carter Mary
Gibbings. William Cudmore
Bedminster 5c 1181
...is indeed her. The Marriage Certificate confirms the address too.
We could only find a firm hit on the 1911 Census and a tentative one on the 1881 Census. And I see there's already a Tree created in Family Search too!
Absolute gold, thank you! thank you!