This monograph examines the tumultuous life and career of Leo Sgouros, one of the most dynamic yet most disputed figures of late medieval Greek history during the critical transition period from the late 12th to the early 13th century.

The study aims to provide answers to several questions that have historically troubled research, based on a thorough comparative analysis of primary sources and auxiliary literature. It also includes a special appendix on the known members of the Sgouro family and its branches.