I presume you mean King Charles the First? He died because he was Intelligent, cultured and because he was a Christian!The parliament was in the hands of the Calvinist faction and they wanted to...
At Whitehall-Gate
Charles I died on March 26, 1780 at the age of 66.
Location of death: Whitehall Palace, London, England Date of Death: 30 January 1649(1649-01-30) (aged 48) Cause of death: Execution
I personly heard a rumor that he died, but I don't know for sure.