It was founded in 1132 as a Cistercian monastery by Guichard and Guillaume de Bourbon, of the family of Bourbon-Lancy which gave kings to France, Italy, and Spain; this gave rise to the name "Royal Abbey". The initial generosity of the founders ensured that the building of the church, dedicated to the Blessed Virgin Mary, and of the monastery was soon completed. The community remained a small one, and until the reform of 1663, the number of monks never exceeded 15.