The Anglo-Saxon Chronicle and Symeon of Durham's Historia Regum supply more details, recording that Oswine, "a most noble ætheling", was killed fighting against Æthelwald on 6 August 761 in the Eildon Hills.
A Crónica anglosaxoa e Simeón de Durham proporcionan máis detalles, lembrando que Oswine, foi asasinado loitando contra Æthelwald o 6 de agosto de 761 en Eildon Hill.