It'll help to know that 'Viga' means 'killer', goði is a cheiftain (and also a priest) and a holmgang is a sanctioned duel to settle disputes.
And damn, I am trying not to let the Icelandic Vessel SPN plot-bunny run away with all my energy, because it would be ridiculous to leave the egg-fic story half-finished when I've already written 18 *thousand* words!