Annick Peters-Custot is Maître de conferences in Medieval history, at the University of Saint-Etienne. She obtained a PhD in Medieval history (2002) in the University of Paris-Panthéon-Sorbonne (Paris 1) on the Greek communities in Southern Italy and their acculturation during the Norman and Staufer periods. She obtained her habilitation à diriger les recherches (2011) at the University of Paris-Panthéon-Sorbonne (Paris 1), on Saint Bruno in Calabria, foundation and posterity of a hermitage in the Norman Southern Italy. The main arguments of her works, principally based on Medieval Southern Italy, are nowadays the Byzantine inheritance in Italy, the notions of political cultural, juridical and religious ‘identity’ in an imperial context; and the circulation of the so-called regula S. Basilii in the Western world, from the Latin translation of the Greek Asketikon of St Basil, and the birth of the notion of monastic rule in the Early Middle Ages, to the reform of Italo-Greek monasticism by Cardinal Bessarion in the fifteenth century.