_Albert I WELF _________+
                                                     | (1236 - 1279)          
                                _Henry I WELF _______|
                               | (1267 - 1322) m 1282|
                               |                     |_Adelheid of ALERAMICI _
                               |                       (1242 - 1285)          
 _Ernest I WELF _______________|
| (1297 - 1360) m 1335         |
|                              |                      ________________________
|                              |                     |                        
|                              |_Agnes of WETTIN ____|
|                                (1264 - 1332) m 1282|
|                                                    |________________________
|                                                                             
|
|--Frederick I WELF 
|  (1350 - 1421)
|                                                     ________________________
|                                                    |                        
|                               _____________________|
|                              |                     |
|                              |                     |________________________
|                              |                                              
|_Adelheid of EVERSTEIN-POLLE _|
  (.... - 1373) m 1335         |
                               |                      ________________________
                               |                     |                        
                               |_____________________|
                                                     |
                                                     |________________________