Hi Looby
Opened this one up on SP and YES! It is the James Stewart Wilson I have been looking at.....so bang goes that theory and back to the drawing board.
Going back to my Grandfather's first marriage in 1894 to Helen Jones in Bathgate his father is named as James Wilson (dyer) mother Margaret Wilson (m.s. Gillon) - neither marked as deceased.
When he re-married in Glasgow in 1935 to Isabella Drummond his father is given as John Wilson, Wool Packer (deceased) and Margaret Wilson (m.s.Gillon) (deceased).
I did find a John and Margaret Wilson on 1871 census for Renton, Dunbartonshire - he was a yarn packer/dye worker but the age for James was wrong.
So far that is all I have found. The mystery continues.......

Hazelnuts01