Yeoman Tonia Barrows was a female Human enlisted crewmember in the 23rd century. She served in the operations division aboard the USS Enterprise in 2267 under the command of Captain James T. Kirk, during the historic five-year mission.
That same year, she was one of several crewmembers briefly trapped on the Shore Leave Planet. While there, she was accosted twice by recreations of legendary rake Don Juan. She found a dress, exactly the sort she imagined a princess of the "blood royale" might wear.
When McCoy returned to the surface, from where he'd been taken for medical care, she took umbrage to the two Rigelian chorus girls he brought with him. His apologetic "After all, I am on shore leave" brought him a frosty "And so am I". (TOS: "Shore Leave")
According to a comic issue of DC's TOS volume 1 series (#56), Barrows eventually earned a promotion to lieutenant, and served aboard the USS Defiant, although she was injured and left the vessel before the events chronicled in "The Tholian Web".