Harald Hardrada
From Tardis Wiki, the free Doctor Who reference
Harold Hardrada was the leader of a Viking invasion of England in 1066. He fought against the Saxons led by King Harold Godwinson in Stamford Bridge. The battle ended with victory for the Saxons, but weakened them. This resulted in their defeat in the Battle of Hastings by the Normans and the Norman Conquest of England. (DW: The Time Meddler)
