Athelstan of Lindisfarne

"Yes," Ragnar says. "If they bury a hoard, people sometimes take somebody along to help, and then kill them to watch over the secret from beyond life. But it seems the boy, who used to play with Björn and Gyda when they were all mostly toddlers, wants us to have the gold, rather than keep it in the cold ground, for a treacherous master who will never be back."