sentences:  Donatus of Besancon combined elements from the Rule of Benedict, the Rule of Caesarius of Arles and Columbanus' Rule for the monastery his mother founded.The Rule of Saint Columbanus was approved of by the Fourth Council of Mâcon in 627, but it was superseded at the close of the century by the Rule of Saint Benedict.For several centuries in some of the greater monasteries the two rules were observed conjointly.