Jean I De Avesnes
Jean I was born in April 1218 in Houffalize, Luxembourg.  He died at the age of 39 on December 24th, 1257 in Valenciennes, Nord, France.

 Aleida of Holland
Aleida of was born about 1226 in Hertogenbosch, Noord Brabant, Netherlands.  She died on March 1st, 1283 in Valenciennes, Nord, France.

 Jean II De Avesnes
Jean II was born about 1247 in Brabant, Flanders.  He died on August 22nd, 1304 in Valenciennes, Nord, France.

 Baudouin De Avesnes
Baudouin was born about 1249 in Valenciennes, Nord, France.

 Bouchard De Avesnes
Bouchard was born on May 26th, 1251 in Valenciennes, Nord, France.  He died at the age of 45 on November 29th, 1296.

 Guy De Avesnes
Guy was born about 1253 in Valenciennes, Nord, France.  He died on May 28th, 1317 in Utrecht, Utrecht, Netherlands.

 Guillaume De Avesnes
Guillaume was born in 1254 in Valenciennes, Nord, France.  He died at the age of 42 in 1296.

 Floris De Avesnes
Floris was born in 1255 in Valenciennes, Nord, France.  He died at the age of 42 on January 23rd, 1297.

 Jeanne De Avesnes
Jeanne was born about 1256 in Valenciennes, Nord, France.  She died in 1304.