Beorhtric's reign lasted sixteen years, and not thirteen; and all extant texts of the Chronicle agree on "iii", but many modern accounts assume that Ecgberht did indeed spend thirteen years in Francia.
Beorhtrics regeringstid varade i sexton år, inte tretton, och andra texter i krönikan anger "iii", men många moderna framställningar antar att Egbert faktiskt tillbringade tretton år i Frankerriket.