Ky Sahra was a startlingly beautiful young Nyueng Bao woman who, with the rest of her people, was trapped in Dejagore at the time of Croaker's assault on the city at the head of the new Taglian army. Despite the reservations of her people, she fell in love with the soldier, Murgen, and became his wife. Together, she and Murgen had a son, Tobo, who was raised within the culture of the Black Company.
In order to get her away from her husband, Sahra's only family members, led by Uncle Doj faked the murder of Sahra and her young son by members of the Deceivers. In reality, Doj simply drugged Sahra. When she awakened, she was told the opposite lie; that Murgen had been slain by the cultists, and with nothing to hold her to the Company, she had been removed.
Eventually, Sahra learned that Murgen was still alive, after she felt his presence when he was wandering outside of his body. She was understandably furious at the treatment she had received, and soon conceived of a plot to return to Murgen.
Years later, after the Captured were interred beneath the Plain of Glittering Stone, Sahra remained with the Black Company throughout the disastrous defeats of the Kialune Wars at the hands of Mogaba. Finally, she and Sleepy became co-leaders of the outfit more or less by default, and worked to subvert the designs of Soulcatcher in Taglios.
Upon the release of the Captured, Sahra relinquished much of her authority within the Company, as the driving force behind her actions had always been to re-unite with her husband over any sort of greater goal.
The Nyueng Bao place the personal name last, so Sahra's family name is Ky.