English berserk

← Icelandic berserkur (cognate)

← Old Norse bjǫrn (mention)

← Old Norse serkr (mention)

← Old Norse berr (mention)

← Old Norse serkr (mention)

← Swedish bärsärk (cognate)

→ English sark (link)

→ English beresque (mention)

→ English berserkly (suffix)

→ English berserkness (suffix)

→ English Berserkeley (blend)

→ Old Norse berserkr (mention)