Hi Jomot
Thanks for your reply, it does sound like George, Charles, Robert and Thomas are related, I hadn't noticed Charles was a witness to George's wedding. I think the Helmsley registers might be in the Harrogate library reference section I'll have a look and see if there is any reference to Richard, Leonard and John's families in them. I'll also plough through familysearch although lately it feels like the search results bear no answer to your searches, even using the batch numbers as reference.
Regards
Julie