Born at Todi, Italy; died between 1097 and 1100. He was a friend
of St. Gregory VII and defender of his reformation measures;
Deusdedit joined the Benedictine Order and became a zealous
promoter of ecclesiastical reforms in the latter half of the
eleventh century. Pope Gregory VII raised him to the cardinalate
with the title of S. Pietro in Vincoli. According to the
superscription of chapter 420 (former reckoning 161) in the
fourth book of his "Collectio canonum", Deusdedit had sojourned
in Germany; but it is not known, however, when and from what
motive he did so. In 1078, he took part in a Roman synod, at
which he represented the opinions of Berengarius of Tours
(Mansi, Conc. Coll., XIX, 762). In the long conflict for the
freedom of the ecclesiastical authority from the oppression of
the civil power Deusdedit sided with Gregory VII, and was one of
his chief agents and defenders. At the suggestion evidently of
this pope, he undertook the compilation of a collection of
canons which he completed in 1087 and de