Anselm, Saint Archbishop of Canterbury. [Letter to Athelits, abbess of St. Mary at Romsey, 1103] in Sancti Anselmi Cantuariensis Archiepiscopi Opera Omnia 4.190-91

[Letter from Anselm, archbishop of Canterbury to Athelits, abbess of St. Mary at Romsey]
Archbishop Anselm writes to the abbess as a fellow supporter of an exiled bishop. It is not clear whether Anselm addresses her as abbess of Winchester because Romsey was in Winchester, or because she had become abbess of Winchester. It is not impossible that she is a different person. Cf. Sharon K. Elkins, , 180 fn.52.
Online at Epistolae (See also Bibliographia record).