Hi Stephan
I think there's a strong possibility that I an descended from Elizabeth Marjoram baptised 1747 Pulham. I believe she married Robert Smith 10 Sept 1766 Pulham St.Mary. I am descended from their son William. Sorry, I don't know more than you do about the Pulham Marjorams. I've found the website Freereg very helpful in tracing BMDs in the Pulhams.
Lorna