The death of Oswulf's brother, Oswine, is recorded at "Eldunum near Mailros" in August 761, in battle against Æthelwald Moll, who had seized the throne on Oswulf's death.
Consta a morte do irmán de Oswulf, Oswine, en "Eldunum preto de Mailros" (hoxe Eildon Hill) en agosto de 761, en batalla contra Aethelwald Moll, quen ocupara o trono á morte de Oswulf.