Roulean was a star system located in the space of the Romulan Star Empire, in the galaxy's Alpha Quadrant.
History and specifics[]
The Roulean system was located in Romulan space in the Tiber sector.
By the 24th century, notable nearby systems in that sector included Tigelis and Xhuj. (Last Unicorn RPG module: The Way of D'era: The Romulan Star Empire)