Originally a nickname for someone with red hair, occasionally used as a given name in the 20th century. As a girl's name it is sometimes a pet form of Virginia, as in the case of the film star Ginger Rogers (1911–1995, born Virginia McMath).
English (of Norman origin): habitational name from any of several places in France called Beauvoir, for example in Manche, Somme, and Seine-Maritime, or from Belvoir in Leicestershire. All of these are named with Old French beu, bel ‘fair’, ‘lovely’ + veïr, voir ‘to see’, i.e. a place with a fine view.