I just went out and used the 1861 on Ancestry. Their new search 'nearest fit' IS strange. I put in the last name and exact place of residence for a fairly uncommon name in Salford, Lancs. and got all kinds of possibilities, all over England. Everywhere but Salford, in fact. And for my great-grandmother Jennings, I only found their entry by using the first name, age and birthplace of her daughter (neither mother or two sons were to be found). And certainly not under Jennings. If you use it, be flexible. Liane