_Idwal Iwrch GWYNEDD __+
                                                      | (0662 - 0720)         
                            _Rhodri ap Idwal GWYNEDD _|
                           | (0700 - 0754)            |
                           |                          |_Angharad of BRETAGNE _
                           |                            (0665 - ....)         
 _Cynan ap Rhodri GWYNEDD _|
| (0726 - 0816)            |
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|                          |_Margaret of DUPTORY _____|
|                            (0700 - 0745)            |
|                                                     |_______________________
|                                                                             
|
|--Ethyllt ferch Cynan GWYNEDD 
|  (0770 - 0816)
|                                                      _______________________
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