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. Date, authorship and sources De miraculis sanctae Mariae Laudunensis was written by a monk who gives his name in the text as Herman. This author, often referred to as Herman of Laon, has increasingly been identified with the Herman of Tournai, abbot of Tournai, who wrote Restauratio sancti Martini Tornacensis (The Restoration of the Monastery of St Martin of Tournai). Herman first drafted the De miraculis at some point between 1136 and 1142, but added to his work in 1143–1144 and again in 1146–1147. The first two books are closely based on two eye-witness accounts, with some additions by the author; his other written sources include biographies,