Kingdom of Essex

Kingdom of the East Saxons
Old English: Ēastseaxna rīce
Latin: Regnum Orientalium Saxonum
527–825
StatusIndependent kingdom (527–709)
Client state of Mercia (709–825)
Official languagesOld English
Latin
Religion
Paganism (before 7th century)
syncretised with Christianity (after 7th century)
GovernmentMonarchy
King 
• 527–587
Æscwine (first)
• 798–825
Sigered (last)
LegislatureWitenagemot
Historical eraHeptarchy
• Established
527
• Full integration into the kingdom of Wessex
825
CurrencySceat
Preceded by
Succeeded by
Sub-Roman Britain
Wessex

The Kingdom of the East Saxons, referred to as the Kingdom of Essex (/ˈɛsɪks/), was an early medieval English kingdom, constituting one of the seven traditional kingdoms of the Anglo-Saxon period. It was founded in the 6th century and covered the territory later occupied by the counties of Essex, Middlesex, much of Hertfordshire and (for a short while) west Kent. The last king of Essex was Sigered of Essex, who in 825 ceded the kingdom to Ecgberht, King of Wessex.