Guigues VII of Viennois

Guigues VII (1225–1269) succeeded his father Andrew Guigues VI as dauphin of Viennois in 1237, initially under the guidance of his mother Beatrice of Montferrat.

He disputed the counties of Embrun and Gap, the dowry of his father's first wife, with Charles of Anjou until a compromise left him Embrun while Charles took Gap.

In 1253 he married Beatrice of Savoy, whose dowry brought him Faucigny, an enclave bordering Savoy that drew his successors into repeated wars. He was succeeded by his son John I, then by his daughter Anne, wife of Humbert de la Tour du Pin.