Rigelian (Vulcanoid)

The Rigelians of Rigel V are an offshoot of the Vulcan race, originating (presumably) as part of the Romulan disapora. Nearly indistinguishable from Vulcans physically, Rigelians do not repress their emotions, but neither are they generally as warlike as their Romulan cousins. (Decipher RPG sourcebook: Worlds)

Numerology plays a significant part in Rigelian culture. (TOS novel: Mind Meld)

Dakona Raal and Hanua of the Heart Clan were Rigelian. (SCE eBooks: Wildfire); TOS novel: Mind Meld)