_Frederick III HOHENSTAUFEN _+
                                                          | (1122 - 1190)               
                              _Henry VI HOHENSTAUFEN _____|
                             | (1165 - 1197)              |
                             |                            |_Beatrice I of IVREA ________+
                             |                              (1143 - 1184)               
 _Frederick II HOHENSTAUFEN _|
| (1194 - 1250) m 1235       |
|                            |                             _____________________________
|                            |                            |                             
|                            |_Constance of SICILY _______|
|                              (1154 - 1198)              |
|                                                         |_____________________________
|                                                                                       
|
|--Margaret of HOHENSTAUFEN 
|  (1241 - 1270)
|                                                          _Henry II PLANTAGENET _______+
|                                                         | (1132 - 1189) m 1152        
|                             _John Lackland PLANTAGENET _|
|                            | (1166 - 1216) m 1200       |
|                            |                            |_Eleanor of POITIERS ________+
|                            |                              (1122 - 1204) m 1152        
|_Isabelle PLANTAGENET ______|
  (1214 - 1241) m 1235       |
                             |                             _Aymer TAILLEFER ____________+
                             |                            | (1160 - 1202)               
                             |_Isabella TAILLEFER ________|
                               (1186 - 1246) m 1200       |
                                                          |_Alice of COURTENAY _________+
                                                            (1160 - 1217)