Osbert of Clare (died in or after 1158) was a monk, elected prior of Westminster Abbey and briefly abbot. He was a prolific writer of letters, a hagiographer and a forger of charters.
By 1138, he had reworked the vita Ædwardi regis of Westminster Abbey. He himself composed a Life of St Eadburh of Winchester for Pershore Abbey and a Life of St Æthelberht of East Anglia, dedicated to Gilbert Foliot sometime after 1148.
Letters, ed. E.W. Williamson, The letters of Osbert of Clare, prior of Westminster. Oxford, 1929. Reprinted in 1998.
Charters, ed. by E. Mason, J. Bray, and D. J. Murphy (eds.). Westminster Abbey charters, 1066–c.1214. RS 25. London, 1988.
Vita Edburgae, MS. Laud Misc. 114, f. 85–120 (Bodleian, Oxford), ed. S.J. Ridyard, The Royal Saints of Anglo-Saxon England. A Study of West Saxon and East Anglian Cults. Cambridge Studies in Medieval Life and Thought 4. Cambridge, 2008. 253 ff (Appendix).
Some extracts are printed in Vita Ædwardi regis "The Life of King Edward", ed. and tr. F. Barlow, The Life of King Edward who Rests at Westminster Attributed to a Monk of Saint-Bertin. 2nd ed. Oxford, 1992. The full text was edited by Marc Bloch, "La vie de S. Édouard le Confesseur par Osbert de Clare." Analecta Bollandiana 41 (1923): 5–131;
