I checked out my 1851 Census Index for North West Kent (Vol VI Sevenoaks Reg District) and found the following: Jesse (28), Sarah (26), Elizabeth (3), Mercy (1). The Folio no corresponds to the area of Shoreham village. It's only an Index, so no great detail but presumably Sarah is his wife. There are more Groombridges in the area. Would be happy to send more info.