Peter Damian (1007–1072)

Reforming Benedictine cardinal and fierce critic of clerical corruption. Peter Damian was an Italian reforming Benedictine monk and cardinal in the circle of Pope Leo IX. Dante placed him in one of the highest circles of Paradiso as a great predecessor of Francis of Assisi and he was declared a Doctor of the Church on 27 September 1828. His feast day is 21 February.