After raising an army , he returned to defeat the brothers , killing Hysing and Helsing .
In Vingulmark , the sons of Gandalf of Vingulmark , Hysing , Helsing , and Hake , attempted to ambush Halfdan at night , but he escaped into the forest .
After raising an army , Halfdan returned to defeat the brothers , killing Hysing and Helsing .
In Vingulmark , the sons of Gandalf of Vingulmark , Hysing , Helsing , and Hake , attempted to ambush Halfdan at night , but he escaped into the forest .