Blanche had always been respectful in her attitude toward the Church, and pious in her habit of life; but she was never servile in her attitude toward churchmen, whom she would no more allow to interfere with her rule than the greatest of the barons. The higher clergy, as a body, were faithful to her; but, here and there, bishops and archbishops arrogated to themselves powers not theirs, or refused to recognize the rights of the crown, whereupon Blanche did not hesitate to join issue with them. One celebrated case is that of the riots at Beauvais, in 1233, when, under Blanche's direction, Louis restored order and asserted the royal power in spite of the objections of the bishop, and continued to sustain the position taken, even after an interdict had been proclaimed in Beauvais. During the period between her two regencies, Blanche continued to reside at the court; her jealousy of Marguerite would in part account for her preferring this to retirement to some one of the chateaux belonging to her private estate. At the time, it must be remembered, the queen of Philippe Auguste, Ingeburge, was living in this way at Orléans. Queen Blanche, indeed, enjoyed a considerable revenue from her estates, which she generally intrusted to the care of the Knights Templars, the financial agents of many a crowned head in Europe. Part of her estates she administered in person. As a further occupation, she devoted herself to various charities. In 1242 the famous abbey of Notre Dame, generally known as Maubuisson, at Pontoise, was completed, thanks to the queen's munificence and to her careful supervision. Maubuisson, with its many dependencies, its beautiful gardens and buildings, became one of the most splendid monastic institutions in France. It was frequently visited and enriched with new gifts by its foundress and her son, and noble ladies chose it as the place to take the veil. One of these ladies, Countess Alix de Macon, became abbess of another convent, Notre Dame du Lys, near Melun, founded by Blanche de Castille.