William III de Avesnes 
William III was born in 1286 in Avesnes, France. William III's father was Jean II de Avesnes and his mother was Phillipine Countess of Luxembourg. He was an only child. He died at the age of 51 on June 7th, 1337 in Valenciennes, France.
‌William III and Jean were married in a religious ceremony on May 19th, 1305 in Longpont, France. They had a daughter named Phillipa \De.
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Children
Phillipa \De Avesnes\
Phillipa \De was born on June 24th, 1311 in Mons, Hainault, Belgium. She died at the age of 58 on August 15th, 1369 in Windsor Castle, Windsor, Berkshire, England.
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