Brian G McMullen • Link
The Rocque map references are:
with Cannon Street on the left side of this section.
on the lower right side of this section.
The Rocque map alphabetical reference points to different Cannon Street to the east of SP's home:
in front of St.George's but I doubt this is the one SP refers to in the entry on Thursday 20 September 1660.
Nix • Link
From Charles Dickens, Jr.'s (did you know there was one?# Directory of London #1879) --
"Cannon Street is one of the greatest of the improvements which have been effected in modern London. It is a noble thoroughfare of great width, leading from St. Paul's- churchyard to the end of King William-street. Its construction has relieved Cheapside of the greater part of the heavy traffic. Indeed were Cannon. Street now closed, Cheapside would become impassable. Cannon-street is a street of wholesale warehouses, and a few sample goods in each window alone tell the passer-by the nature of the immense stock contained in them. Here are representatives of many of the largest foreign as well as English firms; and there are large stores of goods from Manchester, Leeds, Birmingham, Sheffield, Belfast and, indeed, from every large manufacturing town in the kingdom. In Cannon-street are the station of the South Eastern Railway, and the Mansion House Station of the Metropolitan, situated at the point where Queen Victoria-street runs diagonally across Cannon-street. In the wall of St. Swithin's Church, opposite the South- Eastern Station, will be found that curious relic of old London, called London Stone. In the Roman days distances were measured from this point. The various narrow streets running between Cannon-street and Cheapside contain many of the most important warehouses and firms of the City. The locality is specially affected by firms connected with the trades in cotton and other textile fabrics."
I haven't been able to date the "improvement . . . in modern London" he is talking about -- surely later than 1667.
"The medieval Cannon Street -- once Candlewick or Candlewright Street (i.e. candle maker) Street -- was extended west of Walbrook in 1847-54 to plans drawn up by J. B. Bunning in 1846. It superseded the ancient line of Watling Street and Budge Row as the main route E. out of St. Paul's Churchyard. The south side of the medieval part was widened too."
Simon Bradley & Nikolaus Pevsner, "London I. The City of London" (Buildings of England) London: Penguin, 1997 p. 441
Cannon Street, Watling Street - correctly Candlewick Street, from Candlewick Ward - ran originally from Watling Street to near London Bridge, and was the earliest highway through the City. ... A scene in the second part of King Henry VI. is laid in this street.
---London, Past and Present. H.B. Wheatley, 1891.
Chart showing the number of references in each month of the diary’s entries.