The Gesta Danorum (Books I-IX) on Ella
The Danish History, > Book Nine.
attestation: Ella attacked those loyal to Ragnar among the Irish, putting them to the sword
"Ella betook himself to the Irish, and put to the sword or punished all those who were closely and loyally attached to Ragnar"
attestation: Ella was King of the English (Northumbria) who became Ragnar's chief enemy
"Ella betook himself"
attestation: Ella's treatment of Ragnar was considered cruel even by the standards of the age
"punished all those who were closely and loyally attached to Ragnar."