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John, Count of Hainaut | |
|---|---|
| Born | 1 May 1218 Houffalize |
| Died | 24 December 1257 (aged 39) Valenciennes |
| Noble family | House of Avesnes |
| Spouse(s) | Adelaide of Holland |
| Issue | John II, Count of Hainaut and Holland Baldwin of Hainaut Joanna, Abbess of Flines Bouchard, Bishop of Metz Guy of Avesnes William, Bishop of Cambrai Florent of Hainaut |
| Father | Bouchard IV of Avesnes |
| Mother | Margaret II of Flanders |
John of Avesnes (1 May 1218 – 24 December 1257) was the count of Hainaut from 1246 to his death.