Niamh Bac was born on Kal'Shabbol as the daughter and second child of Ussej Padric Bac and Laili Jeyna Rendar, as well as the younger sister of Ussej Padric Bac II. Like with her brother, it was a complete accident that Laili became pregnant with her. Ussej and Laili had been going through a difficult time in their relationship and had called off a tentative and fragile engagement that they had made due to their frequent arguments and disagreements. However, Niamh was conceived when their passionate anger turned into romantic passion, though throughout Laili's pregnancy with Niamh her parents were frequently at odds.