Allen remains Swindon Town's longest-serving manager, holding the position for 31 years between 1902 and 1933, spanning 1,192 matches.
Swindon Town's shortest reigning permanent manager is Martin Ling, who was in charge for nine games.
Statistically, Swindon Town's least successful manager is Paul Hart, who won just one of his 11 matches in charge.
The first manager under whom Swindon Town won a major trophy was Danny Williams, who guided the club to the Football League Cup in the 1968–69 season.
Fred Ford, Lou Macari, Osvaldo Ardiles, Glenn Hoddle, Steve McMahon and Paolo Di Canio have also won trophies with the club.