If John Lefebvre were a Medieval bard, he'd have stories to entertain crowds for years. Six-foot-one with flowing hair, the 66-year-old leans over a mug of steaming coffee like a Canadian version of The Dude from the Big Lebowski, as he recounts his kaleidoscopic story from choirboy to multimillionaire to jailbird. It’s a bewildering resume: high school dropout, teen drug dealer, lawyer...