ExtraTV reports Stefan Karl Stefansson died on Tuesday surrounded by loved ones. His wife Steinunn shared the sad news in a statement to E! News, saying, "My beloved, Stefan Karl Stefansson, 43, has passed away after battling aggressive bile duct cancer for two years.” She continued, "Stefan's family wants to express their gratitude for the support and warmth received in recent years, and to express their deepest sympathy to the many friends and fans of Stefan Karl.