Warriors of the Storm

Ragnall Ivarson, driven out of Ireland, invades Mercia near Ceaster with allies including Jarl Haesten. After seizing the unfinished fort of Eads Byrig, he turns north to take Northumbria. Uhtred retakes the fort and has Æthelstan kill Haesten. Ragnall hands Uhtred back his elder son, Father Oswald, alive but mutilated. Uhtred sails to Ireland to rescue Stiorra and Sigtryggr, and together they take Eoferwic from Brida, who is killed by Stiorra. Chasing Ragnall, Uhtred's trap fails and he is surrounded in a Roman ruin. He frees Ragnall's hostages, half the enemy army switches sides, and Ragnall is beaten and killed.

1. ChangeNo Ragnall on screen

   The book's villain is Ragnall Ivarson, driven out of Ireland. The show drops Ragnall; in S5, Sigtryggr's brother Rǫgnvaldr shows up alongside Brida.

   source ↗
2. ChangeBrida in Eoferwic

   In both, Brida seizes Eoferwic and is killed by Stiorra. In the book it's a side front in the war on Ragnall; on the show, Brida is the season's main enemy.

   source ↗
3. ReferenceRagnall was real

   Ragnall is based on Ragnall ua Ímair, a Viking who took York and died in 921.

   source ↗