"'As I was going down Bishopsgate Street, An oyster-girl I happened to meet-'"
An oyster, close-up
Creative Commons AttributionAn oyster, close-up - Credit: Jeremy Keith, Flickr

 The Oyster Girl was a popular nineteenth century song.

There seem to be various versions of the lyrics, although none include a reference to Bishopgate Street.

Bishopsgate is a road in the City of London.

Listen on Spotify to one version of The Oyster Girl