The folks at mental_floss show you how with “33 Crass and Creative Norse Nicknames.”

Before surnames were a well-established way of telling one Olaf or Astrid from another, identifying nicknames were far more prevalent. Historical figures had their share of quirky epithets—from Albert the Peculiar to Zeno the Hermit—but the Norse Vikings seem to have had them beat when it comes to comical range and sheer absurdity.