Ermengarde of Provençe, ( 984-1042) was Countess of Blois via her marriage to Odo II, Count Blois. She influenced her husband to endow and repair monasteries and churches.
Ermengarde was the daughter of Robert I of Auvergne and Ermengarde of Provence. By 1005 she married Odo II, Count Blois, and was his second wife. After Ermengarde's marriage to Odo, she interceded for the monks at Marmoutier abbey, resulting in her husband building a bridge at Tours. At her insistence, he made its usage toll free. Ermengarde also persuaded Odo into repairing the church at the abbey of Epernay.
Ermengard and Odo had: