Wihthun seems to have been appointed bishop in 789, as he appears last among the bishops in the witness list of a charter issued by Osfrith, King of Mercia, to Wærmund, Bishop of Rochester in that year.
Wihthun's last datable subscriptions are to two charters of 805: a grant by Cuthred, King of Kent, to Archbishop Wulfred,[1] and a grant by Coenwulf, King of Mercia, and Cuthred, King of Kent, to a priest called Wulfhard.[2] He also witnessed a grant from between 805 and 807 by Cuthred, King of Kent, to Æthelnoth, praefectus.[1]
Wihthun died sometime after 805 and before 811.[3]
^Fryde, et al. Handbook of British Chronology p. 221
References
Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1996). Handbook of British Chronology (Third revised ed.). Cambridge, UK: Cambridge University Press. ISBN0-521-56350-X.
Kelly, S. E. (1998). Charters of Selsey. Anglo-Saxon Charters 6.