Guigues IV Albon de Forez, Count of Forez, Count of Lyon, was born circa 1199 to Guigues III de Forez (1160-1202) and Ascura de Sully (c1180-c1227) and died 29 November 1241 Castellaneta of unspecified causes. He married Mahaut de Dampierre (1196-1223) 1205 JL . He married Ermengarde of Auvergne (1196-1225) 1223 JL . He married Mathilde de Nevers (1188-1257) 1225 JL . William I of England (1027-1087), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, Rollo of Normandy (860-932)/s.
Note that sources disagree which wife had which child.
|Offspring of Guigues IV de Forez and Mahaut de Dampierre (1196-1223)|
|Guigues V de Forez (c1210-1259)|
|Renaud I de Forez (c1215-1270)||1215||13 November 1270||Isabelle de Beaujeu (1225-1297)|
|Offspring of Guigues IV de Forez and Ermengarde of Auvergne (1196-1225)|
|Artaude de Forez (c1224-)|