A Life of St. Leo IX., deeply tinged with the passions and prejudices of the age, has been composed by Wibert, printed at Paris, 1615, in octavo, and since inserted in the Collections of the Bollandists, of Mabillon, and of Muratori. The public and private history of that pope is diligently treated by M. de St. Marc. (Abrege, tom. ii. p. 140 - 210, and p. 25 - 95, second column.)