James,
Curtis Stevenson was my 2nd Great Grand Uncle. He is buried in Queens Road Cemetery in Croydon, and his grave marker shows him as being a Captain in the 2nd South Middlesex Volunteer Rifle Corps. There is a window to his memory in Southwark Cathedral which I visited yesterday. As he is not a direct ancestor, I haven't really spent too much time on him, but I have become a little intrigued! Whilst visiting the cemetery last week, I looked for any traces of Oaklands, however London Road obviously bares no resemblance to what it did in the mid to late 1800's. There is an Oaklands Avenue, off London Road, which may or may not have been where their house was located. My family tree has no Thornton connections that I know of. My family tree is on ancestry, if you have access. The wife was called Sarah and she died at Oaklands in 1913.
I have some photographs of his gravestone and the window, but they appear to be too large to attach to this post.
David Stevenson