King Arthur’s legendary battles were fought over food for his people - not land or gold - after a volcanic eruption caused a global famine 1,500 years ago, a Celtic history expert has claimed. Andrew Breeze said a massive volcano eruption in El Salvador in 535 AD spread ash into the atmosphere, obscured the sun and ruined harvests - meaning that Britons were left starving. The British academic claims Arthur’s mission was actually to rustle cattle from neighbouring tribes in Scotland, and he became a hero for helping the people of Strathclyde survive a famine.There's a small problem with this hypothesis as a complete explanation, which has to do with the reality of the Saxon migration. Evidence from graves shows that there was one, and that it reversed during a specific period around the time associated with any historical Arthur.
Still, it might be a partial explanation for some of what went on.