_Cadell ap Rhodri DINEFWR __+
                                                          | (0850 - 0909)              
                           _Hywel ap Cadell DINEFWR ______|
                          | (0887 - 0950)                 |
                          |                               |_Rheingar of UNKNOWN _______
                          |                                                            
 _Owain ap Hywel DINEFWR _|
| (0905 - 0988)           |
|                         |                                _Llywarch ap Hyfaidd DYFED _+
|                         |                               | (.... - 0904)              
|                         |_Elen verch Llywarch of DYFED _|
|                                                         |
|                                                         |____________________________
|                                                                                      
|
|--Maredudd ap Owain DINEFWR 
|  (.... - 0999)
|                                                          ____________________________
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