Mackintosh, Charles Rennie
Charles Rennie Mackintosh (1868-1928) is known more for his architecture than his leaded glass-work, but he designed everything in this building: exterior, interior, furniture, curtains, cutlery, lamps, wall decoration and metalwork. He did not make everything himself. The glasswork was made by local glass artists; McCulloch & Co. and Cooper & Co. (as can be seen in the job-books) under his supervision.
For an overview of Mackintosh’s career see the Glasgow School of Art website at GSA – Charles Rennie Mackintosh