King Magnus was the King of Fluxford and became utterly enraged by the capture of his daughter. While he stayed in the castle, protecting it from attacks by Dragons, he sent two parties, one to find Merlin's Helm and the other to The Black Tower where Marton Dhal was situated. One veryone's return and during the Siege of Fluxford he was bewildered to discover that Gramling was an enemy. (The Sorcerer's Apprentice)