Ethelred, son of Penda, succeeded his brother Wulfere as King of Mercia, A.D. 675. A year later he waged a cruel war against the kingdom of Kent, leading an undisciplined army, which destroyed churches and monasteries, and laid waste the city of Rochester. He had also a bitter feud with Egfrid, King of Northumbria, which was at length appeased through the mediation of St Theodore. After a victorious reign of thirty years, Ethelred desired to devote his thoughts exclusively to the kingdom of the life to come, and for this purpose renounced his earthly realm and retired to the Abbey of Bardney, to which place his wife Osthrytha had solemnly translated the relics of her martyred uncle Saint Oswald. In this monastery, for which he had a singular predilection, the king made his religious profession, leaving the cares of government entirely to his nephew and successor Coenred, and here he ended his days in peace.
- Father Richard Stanton. “Ethelred, 716”. , 1887. CatholicSaints.Info. 23 April 2015. Web. 27 March 2017. <>