In August, 1941, Hillborough was founded in Toronto by Adrian Dingle, the brothers René and André Kulbach, and an anonymous investor. Their flagship title was called Triumph-Adventure Comics, and featured the most famous character of what has been called the Golden Age of Canadian comics—Dingle's Nelvana of the Northern Lights, the first Canadian female superhero, who debuted several months before Wonder Woman. After seven monthly issues, Dingle brought Triumph-Adventure to Bell Features in early 1942, and was followed most of the Hillborough staff.