I discovered this window when doing an estimate for repair of windows at St Columbkille's Church in Rutherglen, Glasgow. I do not yet know the maker.
It is supported inside the main window which is 8 metres tall. This internal positioning has kept it from the damage that all the external windows on this side have received from pellet guns.
The image is supported mid-way up the whole window.
The title "I am the vine; you are the branches" is wound round the figure. I have added two photos which are not accurately cropped but still give a good idea of the quality of the work.