Frederick George Meeson Beck, 1911 Encyclopædia Britannica, Volume 6… (1911)
“ In 798 he invaded Kent, deposed and imprisoned Eadberht Præn, and made his own brother Cuthred king. Cuthred reigned in Kent from 798 to 807, when he died, and Cœnwulf seems to have taken Kent into his own hands. ”
