Findings:

• Ragnar
• Ragnar (user)
• Ragnar! (user)
• Ragnar Blackmane
• Ragnar Danneskjöld
• Ragnar Lothbrok
• Ragnar Frisch
• Ragnar Granit
• Radiant Rites of Ragnar il Ause
• Redbeard (user)
• For Redbeard

If you Log in you could create a "Ragnar Redbeard" node. If you don't already have an account, you can register here.