__
                                             |  
                        _Peter CANTABRIA ____|
                       | (.... - 0730)       |
                       |                     |__
                       |                        
 _Alfonso I CANTABRIA _|
| (0693 - 0757)        |
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|                      |_____________________|
|                                            |
|                                            |__
|                                               
|
|--Mauregatus ASTUR-LEON 
|  (.... - 0789)
|                                             __
|                                            |  
|                       _____________________|
|                      |                     |
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|                      |                        
|_Sisalda of UNKNOWN __|
                       |
                       |                      __
                       |                     |  
                       |_____________________|
                                             |
                                             |__