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Memory Alpha

Gi'ral was a female Klingon.

In 2346, she was living on Khitomer when it was attacked by the Romulans. A handful of Klingons, Gi'ral among them, survived the Khitomer Massacre and were taken prisoner by the Romulans. They were transported to Carraya IV, where Gi'ral later married the commander of the internment camp, the Romulan Tokath. They had a daughter together, Ba'el.

In 2369, Worf discovered their whereabouts when searching for his father. Imprisoned in the camp, he became attracted to Ba'el. Gi'ral sensed this and tried to discourage them. When Tokath decided to execute Worf who refused to accept his confinement. When Ba'el stood up in front the firing squad along with Worf, Gi'ral intervened and gently convinced Tokath to stop the execution. (TNG: "Birthright, Part I", "Birthright, Part II")

Gi'ral was played by actress Cristine Rose.
Her name comes from the script.
The costume worn by Rose was later also worn by Diane Lee in the episode "Rightful Heir", Anne Verrier Scatolini in the episode "Firstborn", and Mary Barbara Alexander in an episode of Star Trek: Voyager.