Vortigern wants Arthur dead, to ensure there is no claimant to the throne. The legends foretell that only the next king will be able to draw Excalibur, Uther's sword, from the rock where it is lodged.

Historians Thought This Was a Medieval Site Linked to King Arthur. It Turned Out to Be a Mysterious Monument Built 4,000 Years Earlier The 11 Rudest Things You Can Do In Someone Else’s House ...