What a shame you'll never know the source of Vence Dora's name, Prawncocktail! Maybe it was the name of one of the vessels on the docks. Was it passed down through her descendants?
Here are some more contributions to the odd names list, from Sussex registers:
George Hedgehog (appropriately enough, a gardener by trade) who was buried in Clayton in 1753
The Hogsflesh family, whose son Francis was buried in Brighton in 1743