Guigues IV of Albon
Guigues IV, called le Dauphin, was count of Albon from 1133. The eldest son of Guigues III and Matilda, he was the first of his family to bear the name Dauphin, which became the title of the Viennois rulers. He married Margaret, daughter of Count Stephen I of Burgundy.
In 1140 the first war broke out between Albon and Savoy, probably over his sister's dowry. Guigues invaded Savoy and besieged Montmélian, but was ambushed and wounded near La Buissière, dying on 28 June 1142. His son Guigues V succeeded him.