T’Lenn was born on Vulcan in 2332. She was the eldest of six children. She grew up with her grandparents and was trained in traditional Vulcan disciplines. In addition, T’Lenn had some science training as she had served in the Vulcan Science Institute for several years. T’Lenn’s penchant for the scientific method and clear-cut choices has given her a healthy dose of skepticism, which usually provides a command asset in dealing with new situations. Her preference for difficult studies is self-traced back to childhood, when she would prefer that to outdoor play.