_Louis VI CAPET _____+
                                            | (1081 - 1137)       
                       _Robert I DREUX _____|
                      | (1123 - 1188)       |
                      |                     |_Adelaide of SAVOY __+
                      |                       (1092 - 1154)       
 _Robert II DREUX ____|
| (1154 - 1218)       |
|                     |                      _____________________
|                     |                     |                     
|                     |_Agnes of BAUDEMONT _|
|                                           |
|                                           |_____________________
|                                                                 
|
|--Peter I of DREUX 
|  (1187 - 1250)
|                                            _____________________
|                                           |                     
|                      _____________________|
|                     |                     |
|                     |                     |_____________________
|                     |                                           
|_Yolanda of COUCY ___|
                      |
                      |                      _____________________
                      |                     |                     
                      |_____________________|
                                            |
                                            |_____________________