 In 1791, during the French Revolution, the empty charterhouse at La Valsainte gave shelter to refugee French Trappists under Dom Augustin de Lestrange, and in 1794 the premises were declared by Pope Pius VI a Cistercian abbey, which became the birthplace of the Cistercian Reform movement.The Trappists were expelled by Napoleon in 1798, but returned to it from 1802 to 1812 and again from 1814 to 1815.From 1818 to 1824 the monastery provided shelter for a group of Redemptorists.