Baudouin VI de Hainaut, Count of Flanders, Count of Hainaut, Latin Emperor, was born July 1172 to Baudouin V de Hainaut (1150-1195) and Margaret I of Flanders (c1143-1194) and died 11 June 1205 Veliko Tarnovo, Bulgaria of unspecified causes. He married Marie de Champagne (c1174-1204) 6 January 1186 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s.
|Offspring of Baudouin de Hainaut and Marie de Champagne (c1174-1204)|
|Jeanne de Hainaut (c1199-1244)||1199 Valenciennes||5 December 1244 Marquette||Fernando de Portugal (1188-1233) Fernando de Portugal (1188-1233) Thomas II de Piémont (1199-1259)|
|Margaret II, Countess of Flanders (1202-1280)||2 June 1202||10 February 1280 Ghent, East Flanders, Flanders, Belgium||Bouchard IV d'Avesnes (1182-1244) Bouchard IV d'Avesnes (1182-1244) Guillaume II de Dampierre (1196-1231)|