Some good progress has been made I see since my last visit.
Although I have visited Edinburgh I didn't take any notice of the Closes in this area, and am interested to know more about them.

Am I correct in assuming that they were used as a side entrance to the dwellings/premises above the shop fronts? Are they "dead ends" or did they run the entire depth of the buildings and give access to dwellings further back from the main street front?
If number 293 Canongate was Mid Common Close, within that address would there have been many seperate addresses, or would they have been defined by 293 a, b, c for example?
If MT's address was 293 Canongate, is that dwelling likely to have fronted Canongate rather than being down Mid Common Close.
Or am I way off the mark here?
I'd love to a stroll there myself to explore.

(but that's not going to happen any time soon more's the pity)
