Who is the youngest person ever to be queen? Who is the youngest person ever to be king?
The youngest person to become queen is Mary Queen Scots who became queen at 6 days of age when her father passed away. On the other hand, the youngest person to become king is Henry VI who became king at nine months of age when his father died. Check out http://en.wikipedia.org/wiki/Henry_VI_of_England and http://en.wikipedia.org/wiki/Mary,_Queen_of_Scots for more information.