Hi Barrie,
I see George E Clarke married Harriet S Knight, married Aston 1816. Where a few of my ancestors were born around that time. They are not in my tree and strangely there are no George's on my Clarke side, Yet.
My cousin did some research a few years ago, this took him back to about 1700 Tanworth in Arden.
We have recently found that to be incorrect and we seem to be from Birmingham, certainly back to 1750 and some evidence to suggest back to the 1500s.
If I can be any help, let me know.
Regards
Colin Clarke