T'Leia was a pre-Reformation Vulcan woman who was the wife of Stef and the mother of Surak. (TOS novel: Spock's World)

T'Leia was also the name of a well known commentator on the Vulcan Reformation. In 2276, she was best known for pointing out that the reality-truth (God) concept had errors. This could be the same person as above. (TOS novel: The Romulan Way)