_Frederick III HOHENZOLLERN _+
                                                       | (1139 - 1200) m 1184        
                               _Conrad I HOHENZOLLERN _|
                              | (1186 - 1261)          |
                              |                        |_Sophie of RAABS ____________
                              |                          (1170 - 1204) m 1184        
 _Frederick III HOHENZOLLERN _|
| (1220 - 1297) m 1275        |
|                             |                         _____________________________
|                             |                        |                             
|                             |________________________|
|                                                      |
|                                                      |_____________________________
|                                                                                    
|
|--Frederick IV HOHENZOLLERN 
|  (1287 - 1332)
|                                                       _Bernard III ASCANIA ________+
|                                                      | (1134 - 1211) m 1173        
|                              _Albert I ASCANIA ______|
|                             | (1175 - 1260) m 1247   |
|                             |                        |_Judith of PIAST ____________+
|                             |                          (1154 - 1201) m 1173        
|_Helene of ASCANIA __________|
  (1247 - 1309) m 1275        |
                              |                         _Otto I WELF ________________+
                              |                        | (1204 - 1252) m 1228        
                              |_Helen of WELF _________|
                                (1231 - 1273) m 1247   |
                                                       |_Matilda of ASCANIA _________+
                                                         (1210 - 1261) m 1228