Niki

I reckon you are correct there. As I saw on the 1851 census the Samuel Bonner born 1817 in silverton was living in Marylebone.

Bonner Samuel 1817 Silverton Marylebone, All Soul

If you have more info that would be great and I would like to add it to my tree. Meanwhile I have quite a bit of info on the ancestory of Samuel Bonner which I could send to you.

Cheers

Graham