_Albert Azzo I OBERTENGHI _+
                                                   | (0970 - 1029)             
                       _Albert Azzo II OBERTENGHI _|
                      | (0997 - 1097)              |
                      |                            |_Adela of MILAN ___________
                      |                              (0975 - 1012)             
 _Fulco I ESTE _______|
| (.... - 1128)       |
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|                     |_Garsende of HUGONIDE ______|
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|
|--Azzo IV ESTE 
|  (.... - 1145)
|                                                   ___________________________
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