Cambridge, Mass. Harvard University, Houghton Library, Typ. 121
Fol., fol. 3r,
Justinian's Digestum
vetus
1.1
After John T. Noonans rigorous analysis of the sources, the on1y remaining attestation of Gratian shows him in August 1143 together with the Bolognese magister Gualfredus and with Moses, who would follow the well-known Walther as Archbishop of Ravenna one year later.
1150: Gratianus Contarenus et Magister Lanfrancus de Brissia
Codice diplomatico Padovano dall'anno 1101 alla pace di Costanza (25 giugno 1183), ed. Andrea Gloria, (2 vols. Monumenti storici della Reale Deputazione Veneta di storia patria, serie 1, vol. 4 and 6; Venice 1879-1881) 1.390 n.535
Winroth, "Where Gratian Slept" p.125-126
He was not yet a bishop when the cardinal
legate Goizo judging a legal case in Venice in 1143, since the conventions
of letter composition (dictamen) would have required that such an
ecclesiastical dignity be recorded in the document. . . . He
might have become bishop soon after his appearance in Venice in 1143, dying
on 10 August in 1144 or 1145. . . . I would in any case
like to suggest, as a working hypothesis, that Gratian stopped teaching soon
after his appearance in Venice in 1143 to govern the bishopric of Chiusi,
but that he, like Peter Lombard, had the misfortune of dying soon after
reaching the episcopacy, on the tenth of August in either 1144 or 1145.
. . .
Indeed, as nobody in the schools remembered very much about
him, there might be good reasons to assume that his teaching career was
rather short.