Jason,
Although I have no known relationship to Andrew and James SHIEL, just the connection to my RUNCIMAN family, I thought I'd give an update, and thank whoever posted the MIs that allowed me to update Andrew and Betty (CLEUGH)'s dates on that page, seeing as you quoted my web pages above.
http://familytree.lornahen.com/p41638.htm is the most up to date info I have for James, son of Andrew and Betty.
The 1841 census above at Hyndsidehill is James and Margaret (WIGHT) with their family at that date, and for once the ages look about right, unlike for some of them in later census records.
Andrew SHIEL and Elizabeth CLEUGH's marriage appears on the IGI as an extracted record in Melrose, which could go some way to explain how come James and Margaret seem to have moved to Melrose before the 1851 census (Colmslie Hill).
The IGI also has the baptisms of two daughters, Margaret and Betty, both Lauder, and both extracted records, to Andrew and Betty (CLEUGH) SHIEL(L).
I can add that James and Margaret (WIGHT) SHIEL's dtr Mary married a James JOHNSTON, and was farming at Norton, Par. of Lauder, 1861.
I do have a Robert SHIEL on my direct line, which is partly why I was interested in the James who was connected to my RUNCIMAN family, and WIGHT is one of my major lines, but not this lot.
Good luck