From his works, Bede, and Paul, deacon of Monte Cassino, towards the end
of the eighth century. His life in four books, by John deacon of Rome in
the ninth age, is full of mistakes, as Baronius observes. See his
history, compiled in French by Dom Dionysius of Sainte-Marthe,
superior-general of the Maurist monks, printed at Rouen in 4to. 1697,
and more accurately in Latin by the same author, in the 4to. tome of
this father's works, in 1705. See also Fleury, b. 34, 35, 36. Mabillon,
Annal. Bened. l. 6, t. 1. Ceillier, t. 17, p. 128. F. Wietrowski, S.J.
Historia de rebus in Pontificatu, S. Gregorii M. gestis, in fol.
Gradonici, S. Gregorius, M. Pontifex, a criminationibus Oudini
vindicatus, and Hieron. Muzio in Coro Pontifcale.