[6] siðfornir ‘heathens’: Hap. leg.; more literally, ‘custom-old, of the old faith or custom’, designating the Jómsvíkingar fighting with Búi. The Christian faith was called nýr siðr ‘the new custom’ (see Fritzner: siðr 2, and cf. Note to Þloft Tøgdr 1/2).