Adelheid von Weimar-Istrien-Krain was born circa 1080 to Ulrich I. von Weimar-Istrien-Krain (?-1070) and Sophia of Hungary (aft1050-1095) and died 1122 of unspecified causes. She married Friedrich II von Dießen (c1050-c1100) . She married Udalschalk von Lurn (bef1070-1115) .
Children
| Name | Birth | Death | Joined with |
| Friedrich III. von Regensburg (c1095-1120) | 1095 | 29 October 1120 | Liutgard von Windberg (c1095-1157) |
| Ulrich II. von Regensburg (c1096-1125) | 1096 | 2 September 1125 | |
| Hartwich von Regensburg (c1097-c1144) | |||
| Tuta von Regensburg (c1098-c1145) | |||
| Name | Birth | Death | Joined with |
| Willibirg von Lurn (aft1100-c1147) | 1100 | 1147 | Konrad I. von Dachau (c1083-aft1130) |
| Adelheid von Lurn (aft1100-1120) | |||
| Altmann von Lurn (aft1100-aft1142) | 1100 | 1142 | |
Residences
Footnotes (including sources)
| ‡ General |
| Ω Birth |
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