Gertrud von Northeim was born circa 1090 to Heinrich von Northeim (c1055-1101) and Gertrud von Braunschweig (c1060-1117) and died before 1165 of unspecified causes. She married Siegfried I. von Weimar-Orlamünde (c1075-1113) . She married Otto I. von Salm (c1080-1150) 1115 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s.
Children
| Offspring of Gertrud von Northeim and Siegfried I. von Weimar-Orlamünde (c1075-1113) | |||
| Name | Birth | Death | Joined with |
| Siegfried II. von Weimar-Orlamünde (1107-1124) | 1107 | 19 March 1124 | |
| Adela von Orlamünd (c1110-1155) | 1110 | 1155 | Konrad I. von Tengling-Peilstein (c1116-1168) |
| Wilhelm von Ballenstedt (1112-1140) | 1112 Worms, Germany | 13 February 1140 | Adelheid |
| Offspring of Gertrud von Northeim and Otto I. von Salm (c1080-1150) | |||
| Name | Birth | Death | Joined with |
| Otto II. von Salm (c1115-1149) | |||
| Sophie von Salm (c1115-1176) | 1115 | 1176 | Dirk VI van Holland (1114-1157) |
| Beatrix von Salm (?-?) | |||
