The Gaddria system was a star system situated in the Oricho sector, which itself was part of both the Outer Rim Territories and the New Territories. This system served as the home system of the Gaddrian ambassador, who led a pro-Alliance to Restore the Republic faction in the Imperial Senate.
The 2009 book The Essential Atlas, authored by Jason Fry together with Daniel Wallace, provided the initial reference to the Gaddria system, noting its location in grid square M-5.