Sigeberht of East Anglia - Abdication and Martyrdom

Abdication and Martyrdom

At some point during his reign, Sigeberht abdicated his power to Ecgric and retired to lead a religious life within a monastery he had built for his own use. Bede does not name the location of Sigeberht's monastery, but later sources name it as Beodricesworth, afterwards called Bury St Edmunds. If that identification is accepted, the likely site was in the original precinct of the mediaeval abbey at Bury St Edmunds, probably the 'worth' or curtilage of Beodric after whom the place was originally named. The site occupied a strong position on the upper reaches of the Lark valley, which drains north-west into the Great Fen through important early settlements at Icklingham, Culford, West Stow and others. This was a line of access towards Ely, where a foundation of Saint Augustine may already have existed, and towards Soham, where Saint Felix is thought to have founded a monastery.

At an unknown date, which may have been in the early 640s, East Anglia was attacked by a Mercian army and Ecgric was obliged to defend it with a much smaller force, though one that was not negligible. The East Angles appealed to Sigeberht to leave his monastery and lead them in battle, hoping that his presence and the memory of his former military exploits would encourage the army and make them less likely to flee. Sigeberht refused, saying that he had renounced his worldly kingdom and now lived only for the heavenly kingdom. However, he was dragged from the monastery to the battlefield where, unwilling to bear arms, he went into battle carrying only a staff. The Mercians were victorious and Sigeberht, Ecgric and many of the East Angles were slain and their army was routed. In this way Sigeberht became a Christian martyr. He is among the names of the kings who according to an ancient saying, were avenged by the slaying of Penda in 654.

The Church that Sigeberht had done so much to establish in East Anglia survived for two centuries, enduring 'evil times' (such as the period when the kingdom was under attack by the armies of Penda of Mercia). It lasted continuously under a succession of bishops until the Danish Great Heathen Army invaded East Anglia in the 860s.

Lives of the English Saints, written by John Henry Newman in 1843, is amongst the texts that gives Sigeberht's feast day as being observed on 29 October.