Alfred Walter Stewart

Alfred Walter Stewart (5 September 1880 – 1 July 1947) was a Scottish chemist, academic, and part-time novelist who wrote seventeen detective novels and a pioneering science fiction work between 1923 and 1947 under the pseudonym of J. J. Connington. He created several fictional detectives, including Superintendent Ross and Chief Constable Sir Clinton Driffield. [Wikipedia]

He was born in Glasgow and educated at the universities of Glasgow, Marburg, and London. He was Professor of Chemistry from 1919 to 1944 at Queen's University, Belfast, and author of a number of respected treatises on chemistry.

As J. J. Connington, he wrote over twenty detective stories, beginning with Death at Swaythling Court (1926), in which the investigation is usually carried out either by Superintendent Ross (The Eye in the Museum, 1929; The Two Tickets Puzzle, 1930) or, more often, by Chief Constable Sir Clinton Driffield (Murder in the Maze, 1927; The Sweepstake Murders, 1931). As Connington he also published an unusual science fiction novel, Nordenholt's Millions (1923). - from https://www.jrank.org/literature/pages/3659/J-J-Connington-pseudonym-Alfred-Walter-Stewart.html