King who lost his head in 1649?

The king who lost his head in 1649 was King Charles I of England. He was executed on January 30, 1649, after being tried and convicted of treason by the Parliamentarians during the English Civil War. His execution marked a significant turning point in British history, leading to the temporary establishment of a republic under Oliver Cromwell. Charles I's death symbolized the struggle between monarchy and parliamentary authority in England.