Simplify the following text for a Grade 7 native English-speaking person.
Original: The Witan , Witenagemot or Council of the Anglo-Saxon Kings of the 7th to 11th centuries was held from time to time at Runnymede during the reign of Alfred the Great .
Simplified: The Witan , the Saxon Council , was held from time to time at Runnymede during the reign of Alfred the Great .