_Joscelin of COURTENAY __+
                                                 | (1034 - 1069)           
                          _Miles of COURTENAY ___|
                         | (.... - 1127)         |
                         |                       |_Elizabeth of MONTLHERY _+
                         |                                                 
 _Reginald of COURTENAY _|
| (.... - 1160)          |
|                        |                        _________________________
|                        |                       |                         
|                        |_Ermengarde of NEVERS _|
|                                                |
|                                                |_________________________
|                                                                          
|
|--Guillaume of COURTENAY 
|  
|                                                 _________________________
|                                                |                         
|                         _______________________|
|                        |                       |
|                        |                       |_________________________
|                        |                                                 
|_Helvise of DONJON _____|
                         |
                         |                        _________________________
                         |                       |                         
                         |_______________________|
                                                 |
                                                 |_________________________