Mike asked if I could locate Gemmells Hall Farm and provide a picture. It turns out that Gamel's Hall - also known as Amwellbury - was rather more a gentleman's residence than a simple farm. It was at Little Amwell, also known as Hertford Heath. William Willson was there in 1841 but he had moved out and was the master of a workhouse in 1851, which would have been a definite fall in social status. I decided to look in the British Newspaper Archive to see if I could fill in any details but nothing definite turned up. [More information]
The query highlights the need to look at census information for social status information, the problems of places that change their name, and the potential value of the British Newspaper Archive.