Every single in stained glass panel in a house of this kind of age has a bit of a C.R.MacIntosh look.
This is a bit special, with the figure in it, and the curvy bits are more nouveau than deco. I wouldn't know where to start, but I think the artist possibly could be well known enough to be recorded and found - it looks good enough. But I don't think it's CRM.
He was Glasgow. West coast. Dundee is East coast.
I don't have figures in any of my panels

which are also in an old house in Dundee.

hiya!