Thanks for your message. It's good to hear from you too and good to find a researcher working on the same Killey/Callow family. I wish I'd seen your post earlier, it would have been exciting to track it and see if any of the great researchers on this board could come up with the answers we're looking for. Do the board members think we've exhausted all lines of enquiry?
I don't have a current subscription to Ancestry, so I don't think I can view your tree that way. Or maybe someone can advise another way of viewing it?
Maybe you have a gedcom file that you could email to me?
I'll contact you by email in the next couple of days and send you my gedcom (or a Word file if you prefer) which has all the details on descendants of John Killey (1810). Oh, and no, we have not been in touch previously, so I'd be interested in the other contact you mentioned.