or Frontevaux (Order of), in ecclesiastical history, a religious order instituted by Robert d'Arbrissel, about the latter end of the 11th century, and taken under the protection of the holy see by pope Pascal II. in 1106, confirmed by a bull in 1113, and invested by his successors with very extraordinary privileges. The chief of this order is a female, who is appointed to inspect both the monks and nuns. The order is divided into four provinces, which are those of France, Aquitaine, Auvergne, and Bretagne, in each of which they have several priories.