Ecgric and the East Anglians appealed to Sigeberht to lead them in battle , but he refused and had to be dragged from his monastery to the battlefield .
At an unknown date , East Anglia was attacked by a Mercian army led by its king , Penda .
Ecgric and the East Anglia   appealed to Sigeberht to lead East Anglia in battle , but he refused and had to be dragged from his monastery to the battlefield .
At an unknown date , East Anglia was attacked by a Mercian army led by its king , Penda .