The Kingdom of Essex or Kingdom of the East Saxons (Old English: Ēast Seaxna rīce) was one of the seven traditional kingdoms of the so-called Anglo-Saxon Heptarchy. It was founded in the 6th century and covered the territory later occupied by the counties of Essex, Hertfordshire, Middlesex and (for a short while) Kent. Kings of Essex were frequently subservient to foreign overlords. The last king of Essex was Sigered and in 825, he ceded the kingdom to Egbert of Wessex.