+ Louis VIII de France        =>
                                                              |  B: 1187
                                                              |  P: 
                                                              |  D: 1226
                                                              |  P: 
                              + Saint Louis IX,  -----------+ "The Lion"
                              | King of France                |
                              |  B: 1215                      + Blanche Alphonsa, 
                              |  P:                             Princess of Castile         =>
                              |  D: 1270                         B:                
                              |  P: Tunis                        P: 
                              |  Canonized in 1297               D: 
Robert de Clermont, ----------+                                  P: 
Comte en Beauvoisis           |                                    
 B: before 1251               |                               + XXXXX                       =>
 P:                           |                               |  B: 
 D: 1317/1318                 |                               |  P: 
 P:                           |                               |  D: 
                              |                               |  P: 
                              + Marguerite Berenger   --------+
                                de Provence                   |
                                 B:                           |
                                 P:                           + XXXXX                       =>
                                 D:                              B: 
                                 P:                              P: 
                                                                 D: 
                                                                 P: