Bouchard D'Avesnes Seigneur
Bouchard was born about 1180 in , Avesnes, , France.  He died in 1255 in Etraeungt, Nord, , France.  He was buried in 1255.

 Margaret Of Hainault
Margaret was born on June 2nd, 1202 in Constantinople, , , Byzantine Empire.  She died at the age of 77 on February 10th, 1280.  She was buried in 1280.

 John I D'Avesnes Seigneur
John I was born in 1218 in Etraeungt, Nord, , France.  He died at the age of 39 on December 24th, 1257 in Valenciennes, , , France.  He was buried in 1257 in Valenciennes, , , France.