Adelheid von Ravensberg was born 1275 to Otto III. von Ravensberg (c1245-1306) and Hedwig zur Lippe (c1238-1315) and died circa 1337 of unspecified causes. She married Otto von Hessen (1272-1328) 1297 JL .
Children
| Name | Birth | Death | Joined with |
| Otto von Hessen (1301-1361) | |||
| Heinrich II. der Eiserne von Hessen (c1302-1376) | 1302 | 3 July 1376 | Elisabeth von Meißen (1306-1368) |
| Elisabeth von Hessen (?-1354) | |||
| Ludwig von Hessen-Grebenstein (1319-1345) | 1319 | 1345 | Elisabeth von Sponheim (?-?) |
| Hermann von Hessen-Nordeck (?-1370) | |||