Thibaut VI de Blois, comte de Blois, comte de Clermont-en-Beauvaisis, was born on an unknown date to Louis I de Blois (c1166-1205) and Catherine de Clermont (-aft1208) and died 1218 of unspecified causes. He married Matilda d'Alençon (-) 19 July 1213 JL . He married Clémence de Roches (-c1259) . Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s.

Theobald fought the Moors in Castile. During the campaign he contracted leprosy and returned home. After living withdrawn in his castle in La Ferté-Villeneuil for a few years he died in 1218, leaving his possessions to his aunts Margaret and Isabelle. The northern part of Blois was erected into the County of Chartres for Isabelle; Margaret received the remainder of the County of Blois, and he sold Clermont to the crown before he died.



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