Guigues V of Albon

Guigues V (c.1125–1162), count of Albon and Grenoble from 1142, was the first to take the title Dauphin du Viennois. He succeeded his father Guigues IV as a minor under his mother Margaret's regency until 1153.

Seeking to avenge his father, killed besieging Montmélian, he renewed the war with Savoy until Humbert III's relief army drove him off. In 1155 at Rivoli he did homage to Emperor Frederick Barbarossa, who confirmed his lands.

The emperor also granted him minting rights at Râme and Cesana. He died at Vizille on 29 July 1162, leaving a daughter, Beatrice.