Eadric Streona
Eadric (or Edric) Streona (died 1017 CE) was an ealdorman of the English Mercians. His name a loose translation of the Anglo-Saxon "the Grasper." Streona is historically regarded as the greatest traitor of the Anglo-Saxon period in English history.
Read more about Eadric Streona: Royal Favour, Treachery, Death