Pierre Toubert

Pierre Toubert (born 29 November 1932) is a French historian. He is a professor of medieval history at the University of Paris and the Collège de France. Focusing on medieval history, his most monumental work is ''Les structures du Latium médiéval : Le Latium méridional et la Sabine du IXe siècle à la fin du XIIe siècle'' (1973), in which he outlines an influential, in-depth study of ''incastellamento'' (in English, encastellation) in the Lazio region of Italy. Provided by Wikipedia