Matriarch Catriona Graf, a human female, presided over the Graf family as its leader throughout the High Republic Era. Xylan was her grandson, and she also had a daughter. Catriona plotted alongside Chancey Yarrow, a scientist, and the Nihil pirates; she utilized the family business to construct Lourna Dee's starship, the Tempest Runner, and aided Yarrow's research into creating a gravity well projector. Upon the Galactic Republic and Jedi Order's uncovering of the Grafs' and Catriona's treachery, the family's holdings were seized; however, Catriona evaded capture by fleeing on Everbloom, the Grafs' mobile headquarters, and convened with Yarrow to talk about her new lab situated in the Hynestian sector.