Hi Gavin,
I have some by the name of John Wilson but not the one you are looking for and there is no Barbara Scott, however, here are the transcriptions that are on the headstones I have recorded, I have also checked the old burial book, this does not mean that there was no headstone for John and Barbara many have been destroyed over the years.
The information you gave me on them especially Barbara dying at the Mill do you know what John did for a living please, I collate the information I get for the history of the area for instance was the Mill working then.
Another point is was it at the old Mill actually in Temple Village she died or was it at Stobbs which is further up the road, this is situated just up from Newtongrange another mix up could be at Carrington Mill which is sometimes put down as Temple as it was in the Temple Parish, the final one is there was a Wood Mill at Arniston again in Temple Parish.
Please let me know if they are related to you or not, if they are I can attach the photos of the Headstones for you.
Erected by John Wilson Portioner, Temple in memory of his Son
Robert Wilson died 16th January 1802 aged 9 Months, also David
Wilson died 26th September 1811 aged 21 years, Mary Baillie his
Spouse died 30th May 1826 aged 71 years, also John Wilson died 21st
February -----.
Erected by John Wilson, Baker Temple in memory of his three
children who all died March 1844, Jane Wilson aged 11 months.
John Wilson aged 3 Years 1 Month and Mary Wilson aged 1 Year 9
Months.
( Inside Church at South Wall )
John Wilson born 11th October 1831 died 11th May 1871. Elizabeth
his eldest Daughter Wife of R.H. Nisbet born 27th May 1860 died
7th August 1888 at Miners Mills Pennsylvania, also, Violet Fairgrieve
Douglas Wife of the above John Wilson died at Musselburgh 23rd
November 1911 in his 82nd year. Also, Lewis Douglas youngest son
of above John Wilson born 7th January 1858 died 23rd January
1933, Interred in Willesdon Cemetery London.