Gratian. The little that is known concerning the author of the
Concordantia discordantium canonum, more generally called the
Decretum Gratiani, must be gathered from the work itself.
Gratian was born in Italy, perhaps at Chiusi. He became a Camaldolese monk
and taught at Balogna. It is uncertain at what time he compiled the
Decretum, but it was commonly held to have been completed in
1151. More recent authorities, however, are inclined to suggest 1140.
Gratian died before 1179, some think as early as 1160. He is regarded as the
true found of the science of canon law.