I have him as living at Scarlett's Well in 1841, and have actually
been there and taken photos of it. Dunmere seems a bit further west,
now that I've found it on a map.
Matthew Growden and Christiana Pope (born Dyer) were my great great
grandparents, and if anyopne is interested they can read more here:
<
https://hayesgreene.wordpress.com/2012/10/12/william-matthew-growdon-1851-1913/>
with photos of Scarlett's Well.