The name of a small town in Texas near Lake Tawakoni. The town of Quinlan began as a train depot in 1892. It was named after George Austin Quinlan, who was the general manager and vice president of the Houston and Texas Central Railway at the time.
A famous bearer of this name is Quinlan Vos an unorthodox Jedi Knight in the Star Wars: The Clone Wars T.V. series and Clone Wars comics/graphic novels.