Valentinois

The County of Valentinois lay around Valence on the lower Rhône, often ruled with neighbouring Diois. In 1337 Aymar V of Poitiers-Valentinois held it as a vassal of Dauphin Humbert II.

Aymar settled their long homage dispute at Chabeuil in 1338; his successor Aymar VI became governor of the Dauphiné in 1349. The last male heir, Louis II, died in 1419, leaving Valentinois to the Dauphin Charles. It entered the royal domain, and in 1498 Louis XII made Cesare Borgia duke of Valentinois.