_Henry III WELF _______________+
| (1129 - 1195)
_William WELF ________|
| (1184 - 1213) |
| |_Matilda of PLANTAGENET _______+
| (1155 - 1189)
_Otto I WELF ________|
| (1204 - 1252) m 1228|
| | _Valdemar I Knudsen ESTRIDSEN _+
| | | (1130 - 1182)
| |_Helena of ESTRIDSEN _|
| (1180 - 1233) |
| |_Sofia of POLOVTS _____________+
| (1138 - 1198)
|
|--Helen of WELF
| (1231 - 1273)
| _Otto I ASCANIA _______________+
| | (1128 - 1184)
| _Albert II ASCANIA ___|
| | (1177 - 1219) m 1205 |
| | |_Ada of HOLLAND _______________+
| | (1163 - 1205)
|_Matilda of ASCANIA _|
(1210 - 1261) m 1228|
| _Conrad II WETTIN _____________+
| | (1159 - 1210)
|_Matilda of WETTIN ___|
(1185 - 1225) m 1205 |
|_Elizabeth of PIAST ___________+
(1152 - 1209)