The Jimbern Regions were areas of land on the planet Acamar III. These regions were near to the Niwray Border and the Jamholt Region. The majority of the residents in this area were of Clan Tralesta.

In 2286, the Niwray Border disputes escalated into a series of brutal reprisals against the Jimbern Regions. Tralesta clan elders attempted to mobilize defenses, but as they hadn't prepared adequately for the scale of these reprisals, Lornbiv Village was overran by Clan Lornak.

In 2366, these regions were mentioned in the history file of the Tralesta Massacre, which was accessible to the crew of the USS Enterprise-D via the Acamarian planetary database. (TNG: "The Vengeance Factor", okudagram)

This region was only mentioned in writing.
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