A vavasour, (also vavasor, Ol French vavassor, vavassour, French vavasseur, LL. vavassor, probably from vassus vassorum "vassal of the vassals") is a term in Feudal law. A vavasour was the vassal or tenant of a baron, one who held their tenancy under a baron, and who also had tenants under him. Alternative spellings include: vavasour, vavassor, valvasor.