Their sons Ecgberht and Hlothhere both became kings of Kent. Their daughter Ercongota was a nun at Faremoutiers, who was eventually canonised. Eorcenberht is mentioned in the "Anglo-Saxon Chronicle" within the annal for 640: "Then his son Eorcenberht succeeded to the kingdom; he overthrew all devil-worship in his kingdom, and was the first of the English kings to establish the Easter festival". In the same passage is the "Chronicle"'s single reference to Seaxburh and Eorcengota, ""...þaes dohter wæs ge haten Erchongata halifemne. and wundorlic man. thære modor wæs Sexburh Annan dohter East Engla ciningas"" – '...his daughter was called Eorcengota, a holy and a remarkable person, whose mother was Seaxburh, daughter of Anna, king of the East Anglians'. Seaxburh and Eorcenberht had a second daughter, Ermenilda, who married Wulfhere of Mercia and after his death became a nun and was later canonised. According to Barbara Yorke, Seaxburh's marriage was itself of seminal importance in the establishment of monastic life for women during the Anglo-Saxon period, as she became an example of an ex-queen who made retreating to an nunnery a desirable royal vocation.