John of Viktring

John of Viktring (c. 1270–1345/1347) was elected abbot of the Cistercian monastery of Viktring near Klagenfurt in 1312. He served as chaplain and confidential secretary to Duke Henry of Carinthia, and in 1330 accompanied King John of Bohemia across the Brenner Pass to Trent. After Henry's death in 1335 he pleaded the claims of Margaret of Tyrol at Linz before Emperor Louis IV, only for the Habsburg dukes to seize Carinthia.

He then advised Dukes Albert II and Otto in Vienna until 1341, when he retired to his abbey and wrote the six-book chronicle Liber certarum historiarum, covering 1217–1343.