_James of AVESNES _________+
                                                  | (1152 - 1191)             
                        _Bouchard IV of AVESNES __|
                       | (1182 - 1244)            |
                       |                          |_Adela of GUISE ___________+
                       |                            (1155 - 1200)             
 _John I AVESNES ______|
| (1218 - 1257)        |
|                      |                           _Baldwin I FLANDERS _______+
|                      |                          | (1172 - 1205)             
|                      |_Margaret II of FLANDERS _|
|                        (1202 - 1279)            |
|                                                 |_Marie of BLOIS-CHAMPAGNE _+
|                                                   (1174 - 1204)             
|
|--Florent AVESNES 
|  (.... - 1298)
|                                                  _William I HOLLAND ________+
|                                                 | (1167 - 1221) m 1197      
|                       _Floris IV HOLLAND _______|
|                      | (1210 - 1234) m 1214     |
|                      |                          |_Adelaide of WASSENBERG ___
|                      |                            (1182 - 1218) m 1197      
|_Adelaide of HOLLAND _|
  (1230 - 1284)        |
                       |                           _Henry I REGINAR __________+
                       |                          | (1165 - 1235)             
                       |_Matilda of REGINAR ______|
                         (1200 - 1267) m 1214     |
                                                  |_Matilda of METZ __________+
                                                    (1170 - 1210)