Sully

The lords of Sully held the feudal barony of Sully-sur-Loire on the upper Loire from around the year 1000. The first recorded baron was Archambaud, whose line ended in an heiress, Agnes. In 1104 she married William the Simple of Blois, a grandson of William the Conqueror, who ruled Sully by right of his wife. Their son Eudes Archambaud continued the de Sully line.

Later barons served the Capetian crown on campaign: Henry II died in the Angevin conquest of Sicily in 1269, and Henry III died on the invasion of Aragon in 1285.

The heiress Marie de Sully married Guy VI de La Trémoille at the end of the fourteenth century, carrying the barony into the La Trémoille family, who sold it in 1606 to Maximilien de Béthune, made Duke of Sully.