Bouchard IV d'Avesnes was born 1182 to Jacques d'Avesnes (c1150-1191) and Adeline de Guise (aft1150-c1191) and died 1244 of unspecified causes. He married Margaret II, Countess of Flanders (1202-1280) 1212 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s.
|Offspring of Bouchard IV d'Avesnes and Margaret II, Countess of Flanders (1202-1280)|
|Jean I d'Avesnes (1218-1257)||1 May 1218 Houffalize, Belgium||24 December 1257 Valenciennes, France||Aleid van Holland (bef1234-1284)|
|Baudoin d'Avesnes (1219-1289)||1 September 1219||10 April 1295||Felicite de Coucy (c1225-1307)|