Hi,

I have just got the marriage certificate of my GGGGGrandfather, William Henry Nicholls, which shows he was married to a Catherine Hockin from Newquay Cornwall, daughter of Nicholas Hockin, a mariner. They Married in the parish of St Columb Minor. I beleive Catherine was born in Gerrans in around 1854, which I think is in the vicinity that you are interested in.

It's be goo to chat further about this. My email address is christian@christian-mayne.net. You can find my tree online at:
http://homepage.ntlworld.com/christian.mayne/genealogy

Hope to hear from you

Regards
Christian