an Entity references as follows:
The longest managerial reign in association football belongs to Englishman Fred Everiss, who was manager of Football League team West Bromwich Albion for over 45 years, starting his reign in 1902 and ending when he retired in 1948. The longest reign in the post-war era (post 1946) belongs to Frenchman Guy Roux, who managed Auxerre in three separate reigns totalling 44 years, taking them from France's fifth division to become Division 1 champions in 1995.