Isabelle of Chartres

[6] Isabelle made several gifts to Moncé for the benefit of Sulpice's soul, including endowing a priest there to say mass daily.

[5][10] When Isabelle's nephew, Count Theobald VI, died without heirs in 1218, his counties were divided between his aunts.

[12] Her husband, John, paid a feudal relief to the king, who in August confirmed Isabelle's succession to the county and to some associated castellanies with her cousin, Count William II of Perche, standing as surety.

[15] This foundation lay on the edge of the marshy wilderness known as the Sologne and the nuns were given 36 arpents to bring under cultivation.

In 1232, Isabelle's daughter Matilda and her husband, Richard II of Beamont [fr], granted the nuns a further 100 arpents rent free if they brought it under cultivation.

[16] In 1226, with the help of the bishop of Chartres and the Benedictine abbot of Saint-Père-en-Vallée, Isabelle and John founded the Cistercian nunnery of Notre-Dame de l'Eau [fr] on land purchased from Lady Adeline of Ver.

[19][20] In 1226, William of Perche died, leaving Isabelle his share of the income from the mills of Chartres for "support of the poor".

[7] In 1248, she bought back property at Saugirard, which her brother had given to the abbey of Barzelle [fr] before 1205, in order to bestow it on the nuns of Lieu.