King Charles, also known as Charles I of England, was born on November 19, 1600, and he died on January 30, 1649. At the time of his death, he was 48 years old. His reign, marked by conflicts with Parliament, ultimately led to the English Civil War. Charles I was executed for high treason, making him the only English monarch to be executed. His reign and demise significantly impacted the course of English history in the 17th century.