Margaret of Blois granted the order of the wood where Felix had built his first hermitage, and on almost the same spot he erected the famous Monastery of Cerfroid, the mother-house of the institute. Within forty years the order possessed six hundred monasteries in every part of Europe. St. John was obliged to go to Rome to found a house of the order, the church of which, Santa Maria in Navicella, still stands on the Caelian Hill. St Felix remained in France to look after the interests of the congregation. He founded a house in Paris attached to the church of St. Maturinus, which afterwards became famous under Robert Guguin, master general of the order.