Otto III. der Gewaltige von Orlamünde, Graf von Orlamünde, was born 1244 to Hermann II. von Orlamünde (c1184-1247) and Beatrix von Andechs-Meranien (1210-1271) and died 13 May 1285 of unspecified causes. He married Agnes von Leiningen (1240-bef1300) 1266 JL .
There is some confusion over his wife: Some sources say she was Agnes von Leiningen, other sources have Agnes von Truhendingen. If she was a Leiningen, her father would be either Emich IV or Friedrich III.
Children
| Name | Birth | Death | Joined with |
| Otto von Orlamünde (c1265-1315) | |||
| Hermann IV. von Orlamünde (c1267-1319) | 1267 | 20 November 1319 | Mechtild von Wiehe und Rabenswald (-1338) |
| Otto IV. von Orlamünde (c1270-bef1318) | 1270 | 28 September 1318 | Adelheid von Käfernburg (c1272-1305) Katharina von Hessen (1286-1322) |
| Irmgard von Orlamünde (c1264) | |||
| Agnes von Orlamünde (c1266-aft1350) | |||
Footnotes (including sources)
| ‡ General |