Saint Bonaventure was involved in the drafting of early legislation for the Order of Poor Clares. Mother Maddalena wrote in The Princess of Poverty: The royal Princess Isabelle of France [the sister of King Saint Louis] had founded a Monastery at Longchamp near Paris and wished to introduce the Rule of S. Clare. But considering the observance of absolute Poverty too severe, she begged S. Bonaventure to introduce certain mitigations so as to allow the possession of property in common. This was done, and the new Rule, drawn up by S. Bonaventure, with the assistance of five other Doctors of the Order, obtained the approval of Pope Alexander IV in 1258. In 1260, twenty Ladies commenced their novitiate in the royal Abbey, as the new Monastery was designated, under direction of five Religious from the Monastery at Rheims. B. Isabelle herself entered the Monastery, yet abstained from making her profession, as her constant infirmities prevented her from the perfect observance of the Rule. The Abbey soon became renowned, and other foundations were made from it in different places.