MaleJean I De AVESNES, COUNT OF FLANDERS & HAINAULT |
| Birth | Apr 1218 | , Houffalize, Luxembourg, Belgium |
| Death | 24 Dec 1257 | , Valenciennes, Nord, France |
| Burial | , Valenciennes, Nord, France |
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| Marriage | ||
| Other Spouse | Aleida Countess Of HOLLAND, COUNTESS OF AVESNES | F4141 | |
| Marriage | Sep 1246 | , Frankfort Am Main, Hessen-Nassau, Prussia |
| Father | Bouchard de AVESNES | F4120 Group Sheet | |
| Mother | Marguerite Countess Of FLANDERS & HAINAULT | F4120 Group Sheet | |