Final answer:
Alfred fought Harald Hardrada, the King of Norway, in his 4th match during the Battle of Stamford Bridge.
Step-by-step explanation:
In his 4th match, Alfred fought Harald Hardrada, the King of Norway. This battle, known as the Battle of Stamford Bridge, took place in 1066 during the Viking Age. Harald Hardrada was seeking to claim the throne of England, but Alfred, who was the King of England at the time, successfully defended his kingdom and defeated Harald Hardrada's army.