John II of Viennois

John II (1280–1319) succeeded his father Humbert I as dauphin of Viennois in 1306. In 1296 he married Beatrice of Hungary, daughter of Charles Martel, titular king of Hungary; their sons Guigues VIII and Humbert II both became dauphin.

His reign was dominated by rivalry with the counts of Savoy: he secured the frontier by chartering walled towns at La Buissière and Avalon, offering settlers land and rights in return for maintaining walls. He made peace with Count Amadeus V in 1314, but war resumed in 1318. John died on 5 March 1319 at Pont de Sorgues near Avignon, returning from the papal court.