You’ve got to respect Harald Hardrada's hustle. At the tender age of 15, he was already making history, fighting alongside his elder half-brother King Olaf II against the Danes in the battle of Stiklestad in 1030.
Sadly for Harald, he found himself on the losing side and had to flee. Later, he would be crowned king of Norway, but Harald wanted more. Believing that he was also the rightful heir to the English throne, he led an invasion of England. Although initially successful, Harald Hardrada was defeated and killed in a surprise attack by Harold Godwinson in the Battle of Stamford Bridge in 1066. But what goes around comes around, and a matter of weeks later, Harold G was killed by the Normans at the Battle of Hastings.