Biography
Irmgard von Käfernburg-Arnstadt was born circa 1276 to Günther VII. von Käfernburg (c1250-1302) and Adelheid von Schwarzburg-Blankenburg (c1254-1319) and died before 1320 of unspecified causes. She married Heinrich II. von Honstein-Klettenberg (c1275-c1342) 1300 JL .
Children
| Name | Birth | Death | Joined with |
| Heinrich VI. von Honstein-Klettenberg (c1301-c1366) | 1301 | 1366 | Mathilde von Orlamünde (c1311-1365) Elisabeth von Orlamünde (c1300-1363) |
| Elisabeth von Honstein-Klettenberg (c1302-1380) | 1302 | 4 April 1380 | Günther XXI. von Schwarzburg-Blankenburg (1304-1349) |
| Dietrich von Honstein-Klettenberg (c1303) | |||
| Gunther von Honstein-Klettenberg (c1304) | |||
| Bernhard von Honstein-Klettenberg (c1305) | |||
Footnotes (including sources)
| ‡ General |