Marquard of Randeck

In the same year, pope Urban VI gave him the vacant title of Patriarch of Aquileia, and Marquard (who had to renounce Augsburg) entered at Cividale in June 1366.

The Venetians besieged Trieste: Lepold III arrived with 10,000 men, supported by a Genoese contingent, but they were crushed (5 September 1369) and the city surrendered.

The Austrians left the alliance, and the remaining members were again defeated on the Piave (1372) and near Treviso (1373) by the Venetian doge Andrea Contarini, who had even hired Turkish mercenaries.

During the War of Chioggia, the patriarch took advantage of the initial difficulties of the Venetians to invade Istria, capturing Koper and Pula.

Marquard was a prominent jurist, and during his reign he published the Constitutiones Patriae Foriiulii , also known as Codex Marquardianus, containing the rules which regulated law in Friuli until the 18th century.