Morris (William) & Co. (Westminster)
William Morris & Co. (Westminster) was a stained glass firm in west London established by William Thomas Morris FMGP (1874-1944) in 1901, on the death of his father Richard Morris, who had established the family glazing business. There was inevitably confusion with the famous firm of Morris & Co., but stylistically their output was very different. After the death of William T Morris the firm continued under the direction of his son, Roland Morris, until 1958.
Sources:
The Other William Morris by Ruth Cooke, The Journal of Stained Glass, vol. XXIV (2000)
Stained Glass Marks & Monograms, complied by Joyce Little, and edited by Angela Goedicke & Margaret Washbourn (NADFAS, 2002)