Another undated charter, in which Æðelberht is called Adelbertus rex Australium Saxonum (Æðelberht, King of the South Saxons), is believed to be a forgery.
[2] Barker (1947) commented "This pair of charters have certain peculiar phrases, especially the firmiter ... præsumat which takes the place of a form introduced by Si quis in most charters.
The early eighth century was age of enlightened kings: Ealdfrið and Eadberht of Northumbria and Ine of Wessex are examples.
It is, therefore, not impossible that these two charters were in fact personally drawn up by the king."
Æðelberht is also mentioned in an undated endorsement to a charter of Noðhelm as Ethilberchto rege.