They will almost all be 18th century tunes relating to the suburb of London (or as it was then, rural retreat for the upper classes). Places like that had dance assemblies that often had tunes written for them.

There are a surprising number of tunes of the mid-18th century named after the now utterly nondescript area of south-east London where I spent the first five years of my life. Imagining these areas of suburbia as rustling with crinolines and echoing to the hoofbeats of carriages delivering ladies to society balls doesn't come easily, but 250 years ago they were like that.