Dear Linda, in the 1720s the Earl of Peterborough built a mansion on his estate between Southampton Common and Portswood Park, and called it Bevis Mount (after the popular Mediaeval hero 'Sir Bevis of Hampton'); the lower part of the estate by the River Itchen later became known as Bevis Valley (mis-spelt even later as Bevois; the mis-spelling has prevailed). Bevis Valley was developed 1852-67 when the estate was broken up, and the south-west part of the estate was named Bevois Town. The 'long road' would probably be Bevois Valley Road (which runs north from Mount Pleasant Road to Portswood Park). The Earl is still comemorated in Peterborough Road, Bevois Town. I can only assume the enumerator was not a local man if he spelt it Bivois (Googling for Bivois gives no results) - however it is interesting that the 1841 Census was taken ten years before the redevelopment is supposed to have taken place - does this mean that 'Bivois Street' was inhabited by the earl's estate workers? It may have been renamed from Street to Road ('street' has connotations of 'built-up area' which the developers might seek to avoid) or, if it did not suit, disappeared under the housing estates. Regards, David