Hogan, James Humphries
James Humphries Hogan (1883-1948) joined James Powell & Sons as an apprentice at the age of 15 and rose to become its art director and chief designer. His formal studies include the Westminster School of Art, the Camberwell School of Art, and the Central School of Arts and Crafts, where he probably studied under Karl Parsons and Christopher Whall. In addition to designing stained glass, for windows both in the UK and overseas, he also designed a considerable amount of glassware for the company, becoming one of the leading innovators in glass design between the two world wars.
Source: The Glassware of James Hogan and James Powell and Sons by Remi Spriggs Dyll (Journal of Glass Studies, vol. 53, 2011)