"My family has held high positions in the Imperial military for generations. Both my father and mother were proud scions of the Tyrak lineage!"
―Moff Tyrak[src]

The Tyrak lineage was a Human family in the Sith Empire with a history of service in the Imperial Military. However, the family interbred; the grandfather of Moff Tyrak married his own niece, and Tyrak's own mother and father were first cousins either once or twice removed. As a result, Tyrak was "eccentric."