The parchment sheet ''Nomina defunctorum'' ("Names of the Dead"), most probably written in the second half of 1161, mentions the nobleman Rudolf of Tarcento, a lawyer of the Patriarchate of Aquileia, who had bestowed a canon with 20 farmsteads beside the castle of Ljubljana (''castrum Leibach'') to the Patriarchate. According to the historian Peter Štih's deduction, this happened between 1112 and 1125, thus representing the earliest mention of Ljubljana.