An 1886 edition of important early medieval charters documenting the expansion of one of Brittany's most ancient religious foundations.The Land?vennec cartulary is a key source for historians of Brittany and of the Breton language. This 1886 edition includes a detailed preface and index and the text of tenth- and eleventh-century charters documenting the expansion of the ancient abbey's properties and influence.The Land?vennec cartulary is a key source for historians of Brittany and of the Breton language. This 1886 edition includes a detailed preface and index and the text of tenth- and eleventh-century charters documenting the expansion of the ancient abbey's properties and influence.The abbey of Land?vennec, an important foundation dedicated to the Celtic saint Gu?nol?, was brought under the Benedictine rule by Louis the Pious in the ninth century. Its cartulary, compiled in the eleventh century, is an essential source for historians of medieval Brittany. The Latin charters were edited and published in 1886 by R?ne-Fran?ois-Laurent Le Men and ?mile Ernault. Their preface provides a detailed description of the manuscript, including foliation, scripts, rubrication and an analysis of Breton personal and place names, whose changing orthography provides evidence for the development of the language over the centuries. The text includes a list of Land?vennec's abbots, charters documenting the expansion of the abbey's holdings over the course of the tenth and eleventh centuries, and a list of the counts of Cornouaille. A complete index also provides translations of Breton terms into French.Pr?face H. d'Arbois de Jubainville; Cartulaire de Land?vennec; Index.