RootsChat.Com

I'm glad that map has proved useful for many people. I drew it and added it to my website for exactly this type of query.
In the mid 1980's I came across a large map with the parish boundaries and thought it might be handy at some time in the future. I had to photocopy it in lots of small parts, glue them together and hand colour it with watercolour. Things are a lot easier these days with good graphics software 
Alb

Only a certain number of soldiers were granted permission to marry, this was known as marrying 'on the strength'. This allowed the couple to live in married quarters and the wife and children had rights to various payments or allowances. If a soldier married without permission, the wife and any children could not live together and had no rights to any allowances, pension payments etc. I can't remember if this is all correct from memory but you get the idea.
I wonder if this second marriage was conducted after permission to marry on the strength was given?

Glad you like my map. In the 1980s I came across a map with the Edinburgh parish boundaries and took a photocopy thinking this might be useful at some time in the future.
It did take some doing about 15 years ago trying to work off the old black and white copy to get the boundaries right, also using other sources to ensure old and new town boundaries were right.

Looking at it now, maybe I should note on the page that the unnamed white area between St Andrews and south Leith is like that because it was too complex. There were various strips intermixed that were too small to be labelled on the original map with the parish they belonged to.

Alb

It does seem too much of a coincidence given the date of birth and Morton Coal Houses being in a mining district. Robert Inglis said that his father and grandfather worked for Prestongrange, so it's likely that James Inglis had run away and settled in the Durham coalfield in England (the first coalmining area he would have encountered going south) thinking it was far enough to be safe.
The Lairds of Prestongrange were very cruel to the workers even by the standards of the day, probably the worst in Mid or east Lothian from reading the evidence given to the Franks Commission. This makes me think that they would have trouble attracting colliers temporarily released from other coalworks making it essential that they did everything possible to find and bring back any of their own runaway colliers to maintain the number of colliers.
There is no direct connection between Prestongrange, Liberton and Sir John Hope. Even before 1775, when a coalwork closed or there was no work for them, by law the colliers were free to go elsewhere under certain conditions (in practice it was a real grey area but i won't go into that and it's been partly covered in some previous answers) so as coalworks closed, opened, expanded or contracted, colliers moved from place to place. I think New Craighall didn't open until 1831.

Alb