of Ambel and Monestier, was established on 11 March 1315, by dismantling the mandate of Corps in favour of Pierre of Ambel and "as needed" his brother Humbert. Peter had, by concession from the Dauphin, high, middle, and low jurisdiction rights over Ambel. The lordship was transmitted through four generations of the Ambel family until the death of Raymond III around 1445. His eldest son Stephen had died ten years earlier and Raymond left only daughters; the Salic law did not apply to dauphinoise land so the eldest, Burguette, became Lady Ambel and her husband, Raymond de la Villette was Lord "of his wife's head" until his death. In 1470 their two sons, John and Aymar de la Villette, become co-lords of Ambel on the death of their mother and sold the lordship to Jean de Bonne, whose eldest son Peter in 1500 gave rights to his brother Reynaud over Monestier which then became a separate lordship. The lordship of Ambel, which was now reduced to a mere parish of Ambel, was sold by Pierre de Bonne to Guillaume of Vienne in 1504. The Viennese were Catholic. The Wars of religion raged in Ambel: the village was destroyed and the castle taken and retaken five times between 1562 and 1577. In 1578, Lesdiguières besieged Ambel; Bertrand III Raimbault de Simiane, Baron of Gordes, dislodged him but Lesdiguières returned and took the castle again. Pierre III of Poligny bought the lordship in Vienne in 1617 and resold it to Jean Achard around 1645. Antoine Achard, nephew and heir of Jean, emigrated in 1867 and his fief was confiscated and given to his younger son Judéon. Pierre Achard, the son of Judéon, passed it to his cousin and adopted son Richard Gautier. Marc-Richard, his son, was deposed by the French Revolution. In 1790 the commune was, like its neighbours, integrated into the department of Hautes-Alpes then a few years later to the department of Isère in the Canton of Corps. The building of the Sautet Dam in 1935 physically separated Ambel from Corps and Pellafol and this forced long detours to reach the neighbouring communes. A ferry link was attempted, but abandoned after a capsize. The lords of the Ambel family (Dates are not given as they are too uncertain) Pierre, created Lord by the Dauphin in 1315 (Pierre I), and Humbert, his brother, Lord "as needed" Raymond, son of Pierre I