_Albert II WELF ______+
                                             | (1268 - 1318)        
                        _Ernest I WELF ______|
                       | (1305 - 1367)       |
                       |                     |_Rixa of MECKLENBURG _+
                       |                       (1275 - 1317)        
 _Otto I WELF _________|
| (1330 - 1394)        |
|                      |                      ______________________
|                      |                     |                      
|                      |_Elisabeth of HESSE _|
|                        (1329 - 1366)       |
|                                            |______________________
|                                                                   
|
|--Otto II WELF 
|  (1380 - 1462)
|                                             ______________________
|                                            |                      
|                       _____________________|
|                      |                     |
|                      |                     |______________________
|                      |                                            
|_Margaret of JÜLICH _|
                       |
                       |                      ______________________
                       |                     |                      
                       |_____________________|
                                             |
                                             |______________________