_Gruffudd ap Cynan ABERFFRAW __+
                                                         | (1055 - 1137) m 1082          
                           _Owain ap Gruffudd ABERFFRAW _|
                          | (1100 - 1170)                |
                          |                              |_Angharad ferch Owain DINEFWR _+
                          |                                (1065 - 1162) m 1082          
 _Hywel ab Owain GWYNEDD _|
| (1120 - 1170)           |
|                         |                               _______________________________
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|                         |_Pyfog UNKNOWN _______________|
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|
|--Caswallawn ap Hywel GWYNEDD 
|  
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