 Guy I, Count of Blois

Guy I of Châtillon, Count of Blois (died 12 August 1342), son of Hugh II of Châtillon and Beatrix of Dampierre, was Count of Blois and Lord of Avesnes 1307–1342.In 1310, he married Margaret of Valois, daughter of Charles of Valois and sister of Philip VI of France.