The Tholian system existed within the Meram sector, residing in the New Territories region of the larger Outer Rim Territories. This stellar system was named after the Tholians, a group of individuals featured in Jedi!, a theatrical production penned by Palleus Chuff sometime around 19 BBY.
The system of Tholia was first defined within the pages of The Essential Atlas, a 2009 reference work created by Daniel Wallace in collaboration with Jason Fry, specifically locating it within grid coordinate P-4.