Evidence suggests that during the period between the death of Edmund the Martyr and the return of Guthrum to East Anglia in 880, Oswald and Æthelred ruled the East Angles as client kings.
A evidencia suxire que durante o período entre a morte de Edmund o Mártir e o regreso de Guthrum en 880, Oswald e Æthelred gobernaron os anglos orientais como reis clientes.