Mercia, Anglo-Saxon abbot (d. 672) Cuthbert, Anglo-Saxon bishop (approximate date) En no Ozunu, Japanese ascetic (approximate date) Deaths August 23 – Abu Bakr, Muslim Caliph Cadwallon, king of Gwynedd (Wales) Eanfrith, king of Bernicia (northern England) Sigeberht, king of East Anglia (approximate date) References Sources Akram, Agha Ibrahim The Sword of Allah: