Halfdan Ragnarsson was a Viking leader and a commander of the Great Heathen Army. According to the tradition recorded in the Norse sagas he was one of the sons of Ragnar Lodbrok, and his brothers included Björn Ironside, Ivar the Boneless, Sigurd Snake-in-the-Eye and Ubba. He was the first King of Jórvík and also claimed the Kingdom of Dublin. He died at the Battle of Strangford Lough in 877 trying to press his Irish claim.
The 13th Warrior. Herger the Joyous: "The All-Father wove the skein of your life a long time ago. Go and hide in a hole if you wish, but you won't live one instant longer. Your fate is fixed. Fear profits a man nothing."