_Barnim I GRIFFIN _____+
                                                  | (1217 - 1278) m 1267  
                       _Otto I GRIFFIN ___________|
                      | (1279 - 1344) m 1296      |
                      |                           |_Matilda of ASCANIA ___+
                      |                             (1255 - 1316) m 1267  
 _Barnim III GRIFFIN _|
| (1300 - 1368)       |
|                     |                            _______________________
|                     |                           |                       
|                     |_Elizabeth of SCHAUENBURG _|
|                       (1282 - 1318) m 1296      |
|                                                 |_______________________
|                                                                         
|
|--Casimir III GRIFFIN 
|  (1348 - 1372)
|                                                  _Henry I WELF _________+
|                                                 | (1267 - 1322) m 1282  
|                      _Henry II WELF ____________|
|                     | (1296 - 1351)             |
|                     |                           |_Agnes of WETTIN ______+
|                     |                             (1264 - 1332) m 1282  
|_Agnes of WELF ______|
  (1318 - 1371)       |
                      |                            _Henry I ASCANIA ______+
                      |                           | (1255 - 1317)         
                      |_Judith of ASCANIA ________|
                        (1302 - 1330)             |
                                                  |_Agnes of WITTELSBACH _+
                                                    (1276 - 1345)