670), abbot of Iken. Informacje na temat zapisanej tabliczki, znajdującej się obecnie w British Museum w Londynie, można znaleźć na stronie muzeum. Dumville, Essex, Middle Anglia, and the Expansion of Mercia in the South-East Midlands, s. 132. Earle, Two of the Saxon Chronicles Parallel, s. 27. Fairweather, Liber Eliensis: A History of the Isle of Ely from the Seventh Century to the Twelfth, ss. 14-15 Fairweather, Liber Eliensis: A History of the Isle of Ely from the Seventh Century to the Twelfth, ss. 15-16. Fairweather, Liber Eliensis: A History of the Isle of Ely from the Seventh Century to the Twelfth, compiled by a Monk of Ely in the Twelfth Century, s. 21. Fryde, et al., Handbook of British Chronology, s. 8.