_Rudolf I HABSBURG _________+
                                              | (1218 - 1291)              
                       _Albert I HABSBURG ____|
                      | (1255 - 1308)         |
                      |                       |_Gertrude of HOHENZOLLERN __+
                      |                         (1225 - 1280)              
 _Albert II HABSBURG _|
| (1298 - 1358)       |
|                     |                        ____________________________
|                     |                       |                            
|                     |_Elizabeth of GORIZIA _|
|                       (1262 - 1312)         |
|                                             |____________________________
|                                                                          
|
|--Rudolf IV HABSBURG 
|  (1339 - 1365)
|                                              ____________________________
|                                             |                            
|                      _Ulrich III of PFIRT __|
|                     | (.... - 1324)         |
|                     |                       |____________________________
|                     |                                                    
|_Joanna of PFIRT ____|
  (1300 - 1351)       |
                      |                        _Reginald IVREA ____________+
                      |                       | (.... - 1321)              
                      |_Joanna of IVREA ______|
                        (1293 - 1349)         |
                                              |_Guillemette of MONTFAUCON _
                                                (1260 - 1317)