John "Jock" Stirling was the Governor of the Northern Prison in Duke Street.
Stirling was a police lieutenant with the Central force and then an acting superintendent on the south side before becoming a prison governor. The Northern Prison had the ironic nickname "Stirling's Hotel."
Reference: Mitchell Library, 920.04BAI
Reproduced with the permission of Glasgow City Council, Libraries Information and Learning
Central police force, governors, lieutenants, Northern Prison, police, policemen, prisons, superintendents