_Rudolf I ZÄHRINGEN ____+
                                                 | (1230 - 1288) m 1257    
                         _Herman VII ZÄHRINGEN _|
                        | (1266 - 1291) m 1278   |
                        |                        |_Kunigunde of EBERSTEIN _
                        |                          (1230 - 1284) m 1257    
 _Rudolf IV ZÄHRINGEN _|
| (.... - 1348) m 1325  |
|                       |                         _________________________
|                       |                        |                         
|                       |_Agnes of TRUHENDINGEN _|
|                         (.... - 1308) m 1278   |
|                                                |_________________________
|                                                                          
|
|--Frederick III ZÄHRINGEN 
|  (1327 - 1353)
|                                                 _________________________
|                                                |                         
|                        ________________________|
|                       |                        |
|                       |                        |_________________________
|                       |                                                  
|_Maria of OETTINGEN ___|
  (.... - 1369) m 1325  |
                        |                         _________________________
                        |                        |                         
                        |________________________|
                                                 |
                                                 |_________________________