Margarethe Countess Of Flanders & Hainault …, daughter of Baudouin VI Count Of Flanders … and Marie De Champagne …, was born about 1198 and died on February 10, 1279. She married Bouchard D'avesnes …, son of Jacques D'avesnes Conde Et De Lueuze … and Ameline De Guise …, on July 23, 1212. He was born after 1180 and died on September 7, 1244 in Estroeungt. Margarethe Countess Of Flanders & Hainault … and Bouchard D'avesnes … were divorced.

Jan I D'avesnes Regent Of Hainault …, son of Bouchard D'avesnes … and Margarethe Countess Of Flanders & Hainault …, was born in April 1218 in Houffalize and died on December 24, 1257 in Valenciennes at the age of 39. He married Aleida Of Holland …, daughter of Floris IV Count Of Holland … and Machteld Of Brabant …, in September 1246. She was born in 1224 and died on March 1, 1283 at the age of 59.

Jan II D'avesnes Count Of Hainault …, son of Jan I D'avesnes Regent Of Hainault … and Aleida Of Holland …, was born about 1247 and died in September 1304. He married Philippine Of Luxembourg …, daughter of Heinrich II “The Blond” Count Of Luxembourg … and Margarethe De Bar Dame De Ligny …, about 1270. She was born in 1238 and died on April 6, 1311 at the age of 73.