Tholia

From Memory Alpha, the free Star Trek reference.

Tholia is presumably the homeworld of the Tholians and seat of the Tholian Assembly.

In 2151, Klaang shouted the planet name "Tholia" to Hoshi Sato the Communications officer of the Enterprise (NX-01). Sato was unable to translate the word or understand its significance. (ENT: "Broken Bow")

Tholia was likely mentioned because of the Tholians involvement in the Temporal Cold War. It should be noted that it has never been listed in relation to the Tholians though.