There won't be a marriage certificate from 1834 (civil registration did not commence until mid 1837). However, there will be a parish register entry which will give the names of the couple, occupations or condition (spinster, widow etc) and witnesses (sometimes a family member). The entry will either be signed or marks made depending on the literacy of the participants. The problem with Stoke Damerel marriages is that it was almost the Gretna Green of the south. Thousands of marriages took place there and I don't think as many questions were asked about who was taking part. Why do you think she was born ca 1802? That would have made her 32 at time of marriage.