William III the Good of Hainault 1 2 3
- Born: 1286
- Marriage: Jeanne de Valois on 19 May 1305
- Died: 7 Jun 1337 aged 51
Other names for William were William V and William III of Avesnes.
Noted events in his life were:
• Acceded: Count of Hainault & Holland, 1304.
William married Jeanne de Valois, daughter of Charles III de Valois and Margaret of Anjou, on 19 May 1305. (Jeanne de Valois was born circa 1294 and died on 7 Mar 1342.)
Marriage Notes:
William and Jeanne had the following children:
- William IV of Hainaut (1307-1345);
- John (died 1316);
- Margaret II, Countess of Hainaut (1311-1356), married Louis IV Wittelsbach, Holy Roman Emperor;
- Philippa of Hainault (1311-1369), married king Edward III of England;
- Agnes (died 1327);
- Joanna of Hainaut (1315-1374), married William V, Duke of Jülich;
- Isabelle of Hainaut (1323-1361), married Robert of Namur;
- Louis (1325-1328) .
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