T'Irnya was a member of Starfleet in the 24th century who worked in engineering. T'Irnya served aboard the Federation starship USS Starbound circa 2359, on a training cruise for Starfleet Academy graduates. T'Irnya survived an attack by Orion pirates, and helped Ensign George Bosinney work after he'd lost his hand in the battle. (TNG novel: Survivors) T'Irnya was most likely a Vulcan, but this was not specified.