Southampton Market in Diary Time was in Southampton Street s. of Bloomsbury Square on this map. http://www.motco.com/Map/81002/SeriesSearchPlates…
The overlays that highlight 17th century London features are approximate and derived from Wenceslaus Hollar’s maps:
Open location in Google Maps: 51.517698, -0.122770
Chart showing the number of references in each month of the diary’s entries.