Aethelweardus, Fabius. [Letter to Matilda, abbess of Essen, 973-1011] in Chronicon AEthelweardi/ The Chronicle of AEthelweard 2: 14-15.

[Letter to Matilda, abbess of Essen]
From Aethelweard, a kinsman of Matilda in response to her request for a history of her Anglo-Saxon ancestors
Online at Epistolae (See also Bibliographia record )