T'Zhae was a Vulcan female who was born in the 2140s. She was a very intelligent young woman who resided in the city of ShiKahr on Vulcan. T'Zhae was a firm believer in the Syrrannite Reformation and was a skilled debater.

By the year 2165, she was a regular participant in debates at a Vulcan Debate house in a ShiKahr business district. Her opponent in many of these debates was Soreth, a fairly young ex-military officer who had left the service after the fall of the Vulcan High Command.

During one such debate when the authenticity of the Kir'Shara was cast into doubt, T'Zhae stated that even if the Kir'Shara was a forgery it would not diminish the fact that the words contained within the artifact were true. Present at the debate was Doctor Phlox, who passed on her words to Admiral Jonathan Archer. Archer subsequently used her words in a speech to the Vulcan people after the real Kir'Shara was recovered and the V'Las coup was stopped. (ENT - Rise of the Federation novel: Uncertain Logic)