The pair formed the Red or Dead label, despite having no fashion training.
Hemingway had studied for a degree in geography at University College, London, after growing up in Blackburn. He was born in Morecambe in 1961.
His father is a Mohawk Indian chief, Billy Two Rivers, who is now a champion of Native American rights in Quebec, and a former British heavyweight wrestling champion. But Two Rivers left home when his son was three and ran off with pools winner Viv Nicholson.
Red or Dead became famous for its footwear, especially its revival of Doc Marten boots.