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.

Willem III “The Good” Count Of Hainault Thorpe, son of Jan II D'avesnes Count Of Hainault … and Philippine Of Luxembourg …, was born about 1286 in Hainault, France and died on June 8, 1337 in Valenciennes. He married 2 times. The first time he married Jeanne Of Valois …, daughter of Charles Count Of Valois … and Marguerite Of Anjou …, on May 23, 1305 in Longpont. She was born about 1292 and died on March 7, 1341 in Fontenelle, France. The second time he married Valois Of Hainault, daughter of Jean Avenes Of Hainault and Phillipine Of Luxembourg, in 1306. She was born about 1294 in Valois, France and died in 1350.