De miraculis sanctae Mariae Laudunensis

De miraculis sanctae Mariae Laudunensis, generally ascribed to Herman of Tournai, is a Latin work written in the 1140s which describes two fundraising tours of northern France and southern England made by the canons of Laon Cathedral in 1112 and 1113, and presents a eulogy of Laon's bishop, Barthélemy de Jur. Its incidental mentions of Cornish folklore about King Arthur, including belief in his survival, have attracted great interest from Arthurian scholars, but it is also a valuable historical source on the state of English and French society in the early 12th century.