The Bois received its present name from a chapel, Notre Dame de Boulogne la Petite, which was built in the forest at the command of Philip IV of France (1268–1314). In 1308, Philip made a pilgrimage to Boulogne-sur-Mer, on the French coast, to see a statue of the Virgin Mary which was reputed to inspire miracles. He decided to build a church with a copy of the statue in a village in the forest not far from Paris, in order to attract pilgrims. The chapel was built after Philip's death between 1319 and 1330, in what is now Boulogne-Billancourt.