Sorry I haven't replied sooner but I've been on holiday.
When I looked at the Ditchingham registers, the names of both parents were given, Robert & Mary were both CANNELL thus connecting to the Thurlton family.
You mentioned before about your Robert being returned to Seething. Have you looked at Seething PR's?
Pigot's is a directory listing prominent citizens and tradesmen. I think I saw this one on line probably on Genuki. Local RO's have them on their bookshelves.
Lastly, I'm sure Pat CAREY must have an e-mail address as she informed me of your message on this board, but I don't know it. I do have her postal address and I'm sure she'd be pleased to hear from you but I don't think I should post it here.
I'm hoping to get to Norwich next week. If you have any mutually beneficial suggestions I'd be pleased to hear them.