Swæfberht was a king ofKent, reigning jointly withOswine, and possibly alsoSwæfheard. Swæfberht issued an undated charter that was witnessed by Oswine,[1] and is probably theGabertus who witnessed a charter issued by Oswine in July 689.[2] He is usually combined with Swæfheard because of their similar names and overlapping dates, but multiple kingship was commonplace in Anglo-Saxon England, especially in Essex, where Swæfheard originated.
^Keynes, Simon (2014). "Appendix I: Rulers of the English, c.450–1066". InLapidge, Michael (ed.).The Wiley-Blackwell Encyclopedia of Anglo-Saxon England. Chichester: John Wiley & Sons.ISBN978-0-470-65632-7.
^Kirby, D. P.The Earliest English Kings. London and New York: Routledge.ISBN978-0-4152-4211-0.