Count of Hainault William D'Avesnes III & Joan Jeanne de Valois 
William and Joan were married on May 19th, 1305 in Longpont, Aisen, France.1 They had three sons and five daughters, named Guillaume, Jean, Louis, Phillipa, Margaretha, Elizabeth, Johanna and Agnes.
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Personal Details
Birth Notes
B: ~1294/1295
Count of Hainault William D'Avesnes III
William was born in 1286 in Avesnes, Pas-de-Calais, France.1 He died at the age of 51 on June 7th, 1337 in Valenciennes, Nord, France.1
Joan Jeanne de Valois
Joan was born in 1294 in Longpont, Aisen, France.1
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Children
Death Notes
D: 16 MAR 1372/73
Countess Phillipa of Hainault
Phillipa was born on June 24th, 1310 in Valenciennes, France.3 She died at the age of 59 on August 15th, 1369 in Windsor Castle, Berkshire, England. She was buried in Westminster Abbey, London, England.4 3
Countess Margaretha of Holland
Margaretha was born in 1311 in Le Quesnoy, Nord, France.1 She died at the age of 45 on June 23rd, 1356 in Le Quesnoy, Nord, France.1
Elizabeth d'Avesnes
Elizabeth was born in 1315 in Hainaut, Wallonia, Belgium.5 She died at the age of 57 on March 16th, 1372 in Brackley, Northamptonshire, England.5
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I33371&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=clcaldwell&id=I015691
3 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I5066&style=TABLE
4 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I4243
5 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=clcaldwell&id=I032319&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=clcaldwell&id=I015691
3 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I5066&style=TABLE
4 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I4243
5 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=clcaldwell&id=I032319&style=TABLE