Who was the ruler who had tag in his beard?

The ruler known for having a tag in his beard was King Charles I of England. This peculiar detail is often mentioned in the context of his execution in 1649, where a tag was reportedly attached to his beard as part of the execution process. The tag was used to hold his head steady during the beheading. Charles I's reign was marked by conflict between monarchy and Parliament, ultimately leading to his trial and execution.