Simplify the following text for a Grade 6 native English-speaking person.
Original: Charles VI ( 3 December 1368 â `` 21 October 1422 ) , called the Beloved and the Mad ( or le Fou ) , was the King of France from 1380 to 1422 , as a member of the House of Valois .
Simplified: Charles VI of France ( 3 December 1368 â `` 21 October 1422 ) , was King of France from 1380 until his death .