_William ZÄHRINGEN ____________+
                                              | (1406 - 1482)                  
                       _Rudolf IV ZÄHRINGEN _|
                      | (1426 - 1487)         |
                      |                       |_Elisabeth of MONTFORT-BREGENZ _
                      |                                                        
 _Philip ZÄHRINGEN __|
| (1454 - 1503)       |
|                     |                        ________________________________
|                     |                       |                                
|                     |_Margaret of VIENNE ___|
|                                             |
|                                             |________________________________
|                                                                              
|
|--Johanna of ZÄHRINGEN 
|  (1485 - 1543)
|                                              ________________________________
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|                      _______________________|
|                     |                       |
|                     |                       |________________________________
|                     |                                                        
|_Maria of SAVOY _____|
  (1460 - 1511)       |
                      |                        ________________________________
                      |                       |                                
                      |_______________________|
                                              |
                                              |________________________________