Details
Samurai (SAM-er-eye) were Japanese warriors who were revered for their skills as warriors, but also for their distinct influence on Japanese fashion. Samurai first appeared in Japan as early as the eighth century c.e., but they truly rose to power in the eleventh century as elite warriors in service to their feudal lords, or daimyos. Other samurai served as guards of the imperial palace. The samurai were accorded special status after about 1600. They alone had the privilege of wearing two swords, they married only among their own class, and they passed their privileges on to their children. The word samurai literally means "to be on one's guard."
More info: http://www.encyclopedia.com/topic/samurai.aspx