The map location is based on this 1680 map and pp.480-1 of the Latham & Matthews Companion.
The overlays that highlight 17th century London features are approximate and derived from Wenceslaus Hollar’s maps:
Open location in Google Maps: 51.504869, -0.124690
Cumgranissalis • Link
'Tis here south of the Hall http://www.motco.com/Map/81002/SeriesSearchPlates…
Chart showing the number of references in each month of the diary’s entries.