text: Kingship of Kent The later history of Kent shows clear evidence of a system of joint kingship, with the kingdom being divided into east Kent and west Kent, although it appears that there generally was a dominant king. This evidence is less clear for the earlier period, but there are early charters, known to be forged, which nevertheless imply that Æthelberht ruled as joint king with his son, Eadbald. It may be that Æthelberht was king of east Kent and Eadbald became king of west Kent; the east Kent king seems generally to have been the dominant ruler later in Kentish history. Whether or not Eadbald became a joint king with Æthelberht, there is no question that Æthelberht had authority throughout the kingdom.
  The division into two kingdoms is most likely to date back to the sixth century; east Kent may have conquered west Kent and preserved the institutions of kingship as a subkingdom. This was a common pattern in Anglo-Saxon England, as the more powerful kingdoms absorbed their weaker neighbours. An unusual feature of the Kentish system was that only sons of kings appeared to be legitimate claimants to the throne, although this did not eliminate all strife over the succession.
  The main towns of the two kingdoms were Rochester, for west Kent, and Canterbury, for east Kent. Bede does not state that Æthelberht had a palace in Canterbury, but he does refer to Canterbury as Æthelberht's "metropolis", and it is clear that it is Æthelberht's seat.