Based on the passages from Janez Vetrinjski’s Book of True Stories (Johannis abbatis Victoriensis
Liber certarum historiarum) that refer to Kranjsko (Carniola) the author attempts an
analysis of sources for this book and of the writing style of Janez Vetrinjski. Accepted is Schneider’s
hypothesis that Vetrinjski knew the archives of the Aquileian patriarchs and that he
might have been familiar with the archives of Philip von Spanheim.