Dear Wonderful Rootschat,
You are being acknowledged in my now-book on Alexander Gallaway, so thank you for all the links to previous leads and thanks to all who contributed.
My new query.
I have No. 18 Broughton Place c.1812 and No.s 5 and 6 Great Stuart Street east
Edinburgh 1830's. I am trying to work out if these numbers are the same today as they were originally. I have gone through most of the relevant maps - Horwoods is great for the first because it includes the street numbers, but no good for the second 2. Frustratingly, none of the later maps seem to include street numbers.
No. 5 (Stuart) appears to be between Moray Place and Ainslie Place on the northern side. But No. 6 seems to be down the western end on the southern side past Ainslie Place if one goes on the Post Office Directories. But how does this work today??? That is, is No. 6 now virtually opposite No. 5?

I'd be most grateful for any clarification.
Kind regards,
Francesr