Theobald I, Count of Blois

Theobald I (before 913 – 16 January 975, 976 or 977), called the Trickster (known as le Tricheur – meaning “cheater”– in French), was Count of Blois, Tours, Chartres and Châteaudun, as well as Lord of Vierzon and Provins. He was a loyal and potent vassal of Hugh the Great, duke of the Franks.