Lairouba was one of the planets in the vicinity of Tau Ceti and Earth; it was either a member of the Western Orion Arm group of planets or, like Barrayar, it was a neighbor to the group with interests in right-of-passage talks.
The head of the planet was the Baba of Lairouba, who had four wives and came to Earth to make a pilgrimage to Mecca. One of the Baba's wives had brown eyes and chocolate-colored skin; she wore a great deal of creamy silk with gold embroidery on it.
The languages spoken there included Lairouban and Arabic.
- Brothers in Arms, chapter 4