
| Friedrich I von Diessen, Count of Oberisar | |
| B: | 972 |
| Ober Isar, Bavaria, Medieval States | |
| D: | 1027 |
| Wassenberg, Heinsberg, North Rhine-Westphalia, Germany | |
| Kunigunde (Hemma) von Önningen, Pfalzgräfin in Schwaben | |
| B: | 970 |
| M: | Öhningen, , Baden-Württemberg, Germany |
| D: | 6 Mar 1020 |
| Dießen am Ammersee, Landsberg am Lech, Oberbayern, Bavaria, Germany | |