Louis I, Count of Sancerre

Louis I (c. 1207–1267) inherited Sancerre in 1217, after his father William I died in Epirote captivity on the way to Constantinople. In 1225 he attended the Council of Bourges, called to deal with the Cathars, and in 1234 his overlord Theobald IV of Champagne sold the homage of Sancerre and Blois to Louis IX, after which the counts held their county directly of the French crown.

On 1 September 1238 he took the cross for the Sixth Crusade. He later acquired the barony of Charenton in exchange for La Ferté-Loupière, and when he died in 1267 his son John I succeeded him.