In 1095, Guigues married Matilda, long thought to be the daughter of
Edgar Ætheling, but now thought more likely to have been a daughter of
Roger I of Sicily, the Great Count, and his third wife,
Adelaide del Vasto. In 1129, Guigues benefited further from the division of the
Viennois between himself and
Amadeus III of Savoy. Four years later, he died, leaving as his heir
Guigues IV "dauphin" (died 28 June 1142) and a second son, Humbert,
Archbishop of Vienne (died 26 June 1147). He had a third son, Guigues "the elder", who was living in 1105 and died young. He also had three daughters: • Garsenda, married
William III of Forcalquier •
Matilda, married
Amadeus III of Savoy • Beatrice (born 1100), married Josserand de Die (c. 1095 – c. 1147) ==Citations==