Simplify the following text for a Grade 7 native English-speaking person.
Original: In 1009 Ã Ã 3\/4 elrÃ d UnrÃ d ( King Ethelred the Unready ) signed a charter at the Great Council which recognized the position and boundaries of Weston .
Simplified: In 1009 Ã Ã 3\/4 elrÃ d UnrÃ d ( King Ethelred the Unready ) signed a document which agreed the size of Weston .