Cambridge, Mass. Harvard University, Houghton Library, Typ.  121 Fol., fol. 34v,  Justinian's Digest 3.1
  De postulando (Bringing a case to court)

Gratian the Lawyer?

August 31, 1143 Cardinal Goizo, legate of Pope Innocent II rendered a decision on tithes.

Et ideo abito consilio patriarca Aquilegiensis et episcopi Ferrariensis et magistri Walfredi et Graciani et Moysis et aliorum prudentum. condempnavit prefatus Goyzo cardinalis episcopum Tervicinum in restitucione possessionis predictarum decimarum quatuor villarum.

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) 1.313-314 n.419; first printed by Flaminio Carnaro (Cornelio), (Ecclesiae Venetae antiquis monumentis, nunc etiam primum editis illustratae ac in decades distributae: Ecclesiae Venetae antiquis monumentis: decas duodecima (13 vols. Venice 1749) 9.378

Noonan, "Gratian Slept Here"  171: "It is tempting to say this Gratian is our Gratian. Kuttner has suggested the identification. To accept it is to presume that there were no other prominent lawyers of that name in those parts at that date. 'Gratianus' is not so rare a name that this presumption is certain. But we can say that it is possible, even plausible, that the unbiased notary who recorded the scene at S. Marco is the only person to have left an eyewitness account of Gratian."